Need he

Molly08

Hello!

I need some insight. I'm >100lbs over weight and have made the decision to lose weight. In 2011 I lost approximately 70lbs and then in 2012 I gained back roughly 35lbs. I don't want to become a serial dieter and I absolutely want to be healthy. I want to be thin and fit.

Here's the problem: I've recommitted to a healthier lifestyle the last 3 weeks. I eat between 1200-1500 net calories a day. I exercise 30minutes 5x a week (moderate level aerobics). I'm hoping to slowly work up to 50minutes 6x a week. I drink 8-12 glasses of water a day. I drink 2 glasses of green tea a day. My exercise calories are measured with a polar heart rate monitor and I use a food scale and measuring cups for food portions. Anyway, I've somehow gained 5lbs!! I'm really discouraged and frustrated. Two years ago when I started losing weight I managed to lose like 10lbs in the first month. How can I gain 5lbs in 2.5 weeks this time?

Please, if you could give me any advice I would really appreciate it. I'm Really upset by my lack of progress and by the fact that somehow I'm heading in the opposit direction. I feel like I am defying science here!

Thanks in advance!