okay i have a small ball in the left upper side of my stomach. I just got my gall bladder remove 5 months ago. i started doing exercise 1 month ago. i delayed in my period 13 days pregnancy is negative. I already have two kids. Can the lump and missed period be link together. i been feeling nauseas, cold , hot and stomach palpate like a pulse . i heard it can be a cyst . Is that possible that exercise cause these?