I'm 19 years old and have dealt with constipation for a few years (well, actually have never really been regular) and it got really severe in the last year. One month ago I started taking a probiotic and have also increased fiber DRAMATICALLY. I drink a lot of water and do all the right things, and still had horrible constipation. it felt like there was always still a huge rock size amount I needed to pass. I took an enema and it didn't do much, so the package said I could do two more within 24 hour periods of each other. So, I did 3 enemas and it did NOTHING. I just felt worse. The pain and discomfort was unbearable.

So I went to a pharmacist and she said it seems to her that it's a hemorrhoid. However I have never had mucus except for the day after the 3 enemas, and I've never had rectal bleeding. 

I am now much more regular going to the bathroom, but it still is extremely uncomfortable. It's most severe sitting on something hard. The pain is more like a discomfort and it is directly to the left of my butt crack. It also feels like you could just put a circle around the whole middle & top of my butt crack and to the left of my butt crack about half-way to the hip... if that makes sense. 

Occasionally I'll have a horrible shooting pain that lasts a few seconds in my colon, but this dull constant pain is not in my colon, it feels more like it's toward the flesh. It sometimes feels like heat. What could it be???