Hi welcome to Health care magic forum.
Thanks for calling H.C.M.F.
You are a female aged 25 weing 180 lb. recently resumed the exercises, Probably due to muscle strain
of the exercises, you are feeling the pain on touching the stomach. Or may be due to slight gastric irritation you might be feeling the pain, lastly there could be worms in the stomach.
I advise you to consult a surgeon for diagnosis and treat ment. You may hav e to go for gastroscopy and U.S.scanning for confirmation of the condition.
Wishing for a quick recovery .