Hi December,
An online friend directed me here this morning and reading your thread inspired me to join! LOL.
Re: pump i wanted to say - look around you at the next class, look how much weight the instructor and really buff/practiced participants have on their bar. Chances are you lift more than them EVERY STEP OF YOUR DAY. So keep that in the forefront of your mind - even without a bar you are lifting WAY more than them. If you put the same number of kgs as you're lifting just getting out of bed on a bar most of them wouldn't be able to lift it and none of them would be able to do a class with it. From that point of view OF COURSE it will feel tough, but MY GOD, your courage and determination to get out there and do it should be a lesson to them and if it isn't it's THEIR loss. I have been to classes with 3 different instructors and i LOVED two whereas the third had a style that suited some people, but not me (too school marm-ish), so it's definitely worth giving it another go.
Re: the calories. Yeah, usually one gets the daily need (that's your BMR (basal metabolic rate + calories for exercise you're doing) and subtracts 500/day for a weightloss of 0.5kg/week. For someone your height and weight i would think just your BMR would be higher than 1500, never mind your total daily need. Contrary to popular belief overweight people need MORE calories to retain weight. In general an active person needs 12-15 calories per lb of weight to maintain their weight, whatever that weight is. If you eat too little you CAN stall weightloss by making your body think you're starving and making it retain fat and eat muscle instead. As for your question, that's a toughie. Is there any way you can see a different nutritionist? When a WEIGHTLOSS programme is contradicting your nutritionist's advice (i.e. the 1200 vs 1500 thing) it might be time for a second opinion.
When you're at the doctor ask if they will check you for poly cyctic ovary syndrome (i'm assuming you're a girl...?) as this frequently leads to insulin resistance and makes it MUCH harder to lose weight, but there are in that case medications that might help. Also ask for adrenal testing. It can't hurt. I have a slow thyroid myself, getting to the bottom of these things can make such a big difference.
Re: the kgs and cms gained... Have you gained cms all over? And did they use calipers to measure bodyfat or just a tape measure? If i use a tape measure i've gained 3cm on each thigh and 1cm on each upper arm since last November (THANKYOU pump!!! :D) but if i use a caliper i can see it's muscle. I've not gained any weight though, and my waist measurement is smaller. Are any of your measurements smaller or are they all bigger? You would expect 6 months of exercise to have increased muscle size and muscle is heavy, but equally you'd expect to see fat loss too.
Finally, this is a big post so thanks for reading it all! LOL. Kepp on keeping on, you're doing a great job and you WILL see results soon.
Bec