9wks preg. Had mild pain on my upper stomach w/c worsen after dinner & had sharp pain on the lower abdomen. Pain subsided after an hour, shud I worry?

Watch diet. So far as long as you do not have any bleeding or cramping, you simply needs to watch what you eat. Eat light and avoid greasy food and fried food. If pain persisted you need to see a GI specialist after you see your OB to make sure your pregnancy is safe. Apply Heat pad and take anti acid and keep your bowels regular as much as you can. Good luck.