worried about weight gain!

I'll be 17 weeks on Friday and I've already gained around 10 pounds. Up until recently I haven't been able to eat much more than carbs and milk/milkshakes! I'm eating a normal diet again, but not going out of my way. I eat eggs or yogurt for breakfast normally, a salad and an apple or banana for lunch, and normal suppers (last night was maid-rites and some broccoli) with some snacks throughout the day (cranberries, cashews, string cheese, gralona bars) Before I got pregnant I was in the gym 2-3 hours and bodybuilding. I had a very strict macro friendly diet. I'm just now starting to feel good enough to get up and get some physical activity in, but get tired so quick. I've just been sticking to squats and dips,  and a walk or 20-30 minutes on the elliptical. I feel like I'm gaining way too fast!!