I never had a stomach ache in the begining but the first half of my pregnancy I was lucky to eat one meal a day. Thethought of anything made me naousous and if I ate something and puked I wasnt able to eat that food ever again lol. So my food choices were getting low lmao.
Try eating tiny meals throughout the day. Take flinstones if the prenatals make u sick. I had to do that. I lost weight in the begining but my weight went up and down the entire time I have no clue how much I gained really but my daughter was born 8lbs 4 oz and healthy so I did good.