What are you eating?

Failure to do the right critical diet exercise.

Lift just the right amount of food from plate to mouth. Excess food
lifting from plate to mouth will cause weight gain.

If you have a personal trainer, he should be able to explain this to you -
he should have measured your body fat at the outset and should be able to
advise on what changes to make to change your body size and shape. Dont be
overly convinced that because he has you exercising thats enough for him to
do.  He should be advising on diet and altering your routine regularly to
challenge your body to react.

Your probably eating the wrong things, but it could simply be that you are
slowly converting body tissue from fat to muscle and muscle is simply
heavier - and at somepoint you'll begin to lose visible fat.  If I regulalry
work out my jeans get loser but my weight doesn't shift that dramatically at
all - maybe only a few pounds over a month and thats OK.  If your working
out regularly and your not over eating and leaving spare calories to store
overnight then you will lose/shift weight, and you must be at least altering
your fat/muscle ratio or you would not be getting fitter.  Simplest ratio -
if you eat more calories in a day that you use - you wont lose weight no
matter how much you exercise.  Your personal trainer should be able to
advise you on this - if not - change him!

Regards

John

1) for weight loss, diet is the number 1 factor.  You need to find a way to
eat less.
2) why do you think you need to continue to see a personal trainer (a few
sessions can be very helpful)?  Is this for motivation?  If so, do you plan
to pay this person for ever?  A couple of good books is much more likely to
lead to long-term benefits, assuming you don't mind reading and learning on
your own.  However, if that's not you, continue with the PT, but point out
that you need to focus on weight loss. Also, ask yourself what's going to
happen if you quit using a PT one day.
3) think about this.  You can eat 600 calories of food in under a minute,
but how long does it take to work off that many calories doing exercise?
4) as another poster said, since you're using a PT, he/she should have
measured bodyfat % so that you can track changes in body composition in
addition to scale weight.  people new to weight training can add muscle and
lean body mass rather quickly, so fat loss can be hidden on the scale.
However, typically, one will see changes in "inches " with the tape measure.
If you haven't, that's probably not the best of signs. Frankly, I'd be very
unhappy with your PT.
5) have you tried a LC diet in addition to your weight training?
6) have you considered counting calories?  If you're not that much
overweight, you may not realizing that you're simply eating too much.  10x
bodyweight in calories is a good place start for weight loss.  if that
doesn't work after 2 weeks, drop 1x bodyweight in calories per two weeks
until you start to see the scales move. Do this while maintaining your
exercise routine.
7) consider, as you have found, that exercise has benefits beyond weight
loss. You've improved fitness, which is really good.  Now all you need to do
is tweak things more for weight loss.  Likely, just eating 500 kcals less
per day will give you 1 lb per week of loss.  Have you tried this (an
alternative to 6)?  since you didn't mention it in your post, it seems to
suggest that you aren't considering the "intake" side of the equation at
all.  Again, for weight loss, intake (ie, diet) is more important than
exercise mainly because most people can out eat what they can typically do
in terms of exercise (assuming you're a typical adult with
responsibilities - pro athletes fit in another catagory).

What's your age, weight, and height?

BTW, in your opening you said you decided to get 'fit'. Well, I think you
did that (to some degree, anyway).  Perhaps now you need to lose some
bodyfat.  Generally, you get what you seek.

health & fitness aren't the same thing. One can be fit and overweight and
healthy all at the same time.  However, fitness for any activity does tend
to improve as one approaches normal weight.  A 150 lb man is more likely to
be "fit" for cycling than a 300-lb professional bodybuilder who is in
competitive shape.

One can be fit, normal weight, and unhealthy, too.  One can be unfit, normal
weight, and unhealthy.  Etc. :)

Exercise is very good for you, for many different reasons.  It's also
almost completely irrelevant to weight loss, at least taken by itself.
Since you don't mention diet at all, I assume you're expecting
exercise alone to do it, boot-camp style, while you eat a "normal"
diet, but that takes several hours of working yourself to exhaustion
every day.

A couple years ago, my sisters and I started a "Couch Potato to 5K in
9 Weeks" plan one of them found on the net, where you ran three times
a week, gradually increasing from 60 second running/walking intervals
the first week to the full 5K by the last couple weeks.  My sisters
were both considerably more overweight than me, by percentage of body
weight anyway, but we all stuck to it.

This was a major increase in exercise for all of us, and when we
started, it seemed impossible that we'd be able to run 5K within a
couple months, but we did.  We also bicycled at least a few miles on
the days we weren't running.  Ten weeks after we started, we ran in
the Hannibal Cannibal, a very challenging 5K/10K run held every year
in Hannibal, Missouri.  We all finished, not with great times (I took
just under 10 minutes/mile), but we were certainly proud of our
achievement.

Here's the thing, though: none of us lost any weight.  This was a huge
jump in physical activity for three straight months (we continued
running for a while after the race), and we certainly got stronger and
better conditioned, but we didn't lose a bit of fat.  I was on sort of
a vague maintenance at the time; not eating a lot of carbs, but not
really avoiding them either, so I certainly was never in ketosis for
any extended amount of time.  My sisters were avoiding eating fat, of
course, and getting plenty of potatoes and pasta.

Here's the cool thing, in your case:  You're already exercising and
seeing the benefits of that, which means you're already producing a
lot of the hormones that will help you burn fat, as soon as you start
providing the right fuel and building blocks for that process --
protein and fat -- and turn off the insulin faucet by cutting back on
carbs.  

You're fighting a very simple chain reaction -- carbs turn into blood
sugar, and you produce insulin in proportion to blood sugar.  One of
the main functions of insulin is to trigger your cells to grab that
sugar and store it as fat.  As long as that chemical process is
happening, you *can't* remove fat from your cells.  There are two ways
to stop that storage process so the removal process can kick in: bring
down the intake of carbs, or starve yourself.

The problem is that you are a big fat ugly slob and there is little
you can do to change it.  You will always be a big fat ugly slob.  God
intended for you to be a big fat ugly slob, so curse God.  Your only
solution will be to place a loaded shotgun to your head and pull the
trigger.  Of course, if God is as mean and nasty as he seems, you will
come back even fatter, uglier, and slobbier.  God hates fat people.