I know this question belongs on a medical forum, but I don't belong to one and the google searches return results that don't really address the symptoms in relation to working out. A few days ago I've began getting what is either a pulse or a maybe just small muscle spasms in my abs. It's specifically to the left of my navel. This occurred after working my abs really hard a few days ago, and now again today. Anyone ever had this from working abs?