OK As much as I want to jump on the jokes.. My wife has had to deal with this so I want to seriously help...
Here is the thing, If you have a wife or girlfriend or sister, or even your mother , ANY GIRL YOU KNOW WILL DO !! get them to call their gynecologist; Seriously, pregnant women get them ALL the time. Their doctors have this stuff that works great. My wife had to get some from her Dr. Not only does the stuff work, it helps ALOT with the pain. She got free samples of the stuff that's why I say get the GF or WIFE or SOMEONE to make a call, she can get this stuff for FREE and its 400% better then any over the counter stuff. I can get the name of it when I get home from work today. and I will post it up...
I have never had them but I can understand the pain you must have, when my wife was dealing with them she hurt so much it I felt bad for her.
If it is so bad that you are missing work you had to have had this for a while now and it finally got big and hurts??