Food is my enemy

I'm 17 weeks I can't do meats and apparently the fruits and veggies I eat aren't cutting it. I'm still 129lbs which means I haven't gained anything and my doctor said she wants me to gain ten pounds this trimester. She isn't too worried but she said she will put me on a diet if I don't gain...I don't know what she wants me to do, I basically live on oatmeal and tht keeps me pretty satisfied on one serving... I'm full for the day. What are y'all eating? I loved food before but now I'm just repulsed by everything.