I had this happen after taking a spinning class. It took probably a week for the soreness to go away.

thank u, but is there anything i can do about it? i mean, i have to sit in an odd position and it is painful to urinate.

I didn't have a hard time urinating so I don't know what to do about that. If it feels like bruising you may want to try icing it and try to avoid sitting directly on the area. I know that will probably be hard to do. Does it burn when you pee or does it feel like you have to urinate frequently?