Weight Gain

So the last time I went to the dr. he got very upset that I had gained 10 pounds since my last visit. Granted at 22 weeks that was all I had gained. since then, I have work so hard to eat healthy and exercise everyday. Still the weight keeps on coming. last week eating mainly fruits and veggies, very little fried food, throwing up a few times, water, and 2 slices of pizza, I have managed to out on 2 extra pounds. Feeling really discouraged.