I was the same with my daughter! I lived off watermelon and crackers the whole way through as I was so sick. Lost 20lbs in my first 12 weeks. Weighed less the day I have birth than at conception. My perfect girl was born 7lbs 11 this July completely healthy and happy.
Every pregnancy is different! Eat what you can, drink lots of water, take your vitamin and try to relax :)
I was like that with my first born, I lost ALOT of weight my whole pregnancy I gained 12lbs , I was never hungry I would eat like 5 crackers and be full. My Dr said as long as I drank alot of water , took my prenatals and the Lil I did eat was healthy me and the baby were ohkay. Which was true ! Cause my daughter was almost 9lbs and I was only 4'10 & 120lbs lol... I'm sure you'll be fine.. I'm going threw it again with this pregnancy I have no appetite I try to eat but the Lil I do eat I get really nauseated.. So I've mainly been eating crackers :/