This probably wont help you... but I am 19 and have the exact
pain... on my stomach just next to my belly button.. it is a strong pulse... much stronger than in my neck... and it is hard as a rock... i know that everyone has a pulse there b/c of a mojor artery that runs down from your neck... but it only hurts randomly... ussually everyother day or so... Unfortunaly I also suffer from
constipation, blood and mucus in my stool... I have had a
colonoscopy and my doctor said I have proctits.. but i don't know if that is related to this Pulse... I havnt asked him yet. Get back to me if you found out what it was, and i will do the same.