Hi mama, pangingimay sa upper belly during pregnancy is pretty common actually, a few of us felt it too around that time kasi lumalaki talaga ang baby and everything's shifting up there! But since you're worried about it, best to mention it sa OB mo sa next check-up para ma-assess niya properly, lalo na kung may associated pain or it's really bothering you. Hugs and I'm sure it's nothing, pero peace of mind lang talaga from your doctor is best.