My Maternity Pants Are Getting Too Tight!

Anyone else realizing they're rapidly gaining weight in the end of their 2 trimester? I want to eat every thing and anything 24/7. All I can think about is food especially desserts. I've read all those "How to manage your weight while pregnant" and even my preganant friend managed to lose weight cuz she was diabetic. However, I'm on maternity leave and at home a lot where the cravings lurk. Thinking about trust getting rid of all my sweets but I know I'll just go out and buy more.

Any realistic, pregger advice would be helpful!