hey orange...
Seconding what these folks have said... make an appointment with a colorectal surgeon. Sounds like you have the thing i have, which is a small tear on the outside of the anal ring. You DON'T want this to get worse.
I'd also use miralax (over the counter... clones are clearlax and laxaclear) to make your bms soft like toothpaste squeezing out (yes, i know, bad image)... you have to play with the dosages, and don't be afraid to split the dose, 1/2 in the morning, half in the evening, only take a 1/2 dose... drink a ton of water (i'm peeing all the time now) and eat lots of bm friendly food, there are lists of them here.
good luck!!!
pat