Weight gain.

When I got pregnant I steadily lost weight until I hit 21 weeks and I started gaining it back. I lost 30 at the beginning and as of 28 weeks I had gained back 7 of it, but my appetite has been so crazy lately and I'm eating literally everything and I'm super nervous for my next appointment with my weight gain. 😩 
I know I should just gain the weight, but I'm so nervous. Maybe I'm just being paranoid.