Ok so I'm a 19 year old male, and I pretty consistently get constipated. I don't eat as much fiber as I should, and this is probably one of the contributing factors.
However, every so often, I have painful bowel movements. This pain doesn't affect my anus, but inside. It's a pain that's very hard to explain, it isn't severe enough that I feel like vomiting or anything, but it usually stops me from having my bowel movement. I just get up off the toilet, go back to my business, and try later. I go back to the toilet a few hours later (5-6) or the next morning, and the pain is normally gone, and I have a bowel movement. Sometimes when I have the pain but follow through with a bowel movement anyways, when the stool is actually coming out the pain goes away. The pain is a little bit below my belly button, and pretty much directly above my anus.
There is very often mucus in my stool (I don't know if that's relevant). I recently realized the pain typically comes more often when I'm gassy and drink things with carbonation in them, along with stuff like large amounts of chocolate. I was thinking this might be IBS, but I was just wondering if anyone else had any ideas..