Losing weight at 9 weeks

Si
I started out around 117 pounds, and went up to about 119. Now I'm back down to 117 again and I have no appetite. Nothing sounds good to me. I don't want to cook because I have horrible food aversions with this baby (baby #2) I don't know what to do. I can't keep losing weight as I'm already pretty thin. Any ideas of what to help me get my appetite back?