Thanks for the responses. Yes, I am male.
I'm not stressed, I avoid stimulants so I got worried. I went to the doctor, and they seem to think it has to do with my less than stellar sleep habits (goto bed at 4am on weekends, then attempt to go to sleep at 12 on Sunday night).
I thought it was strange because it only started recently, and only after sex. What do you guys and girls do to calm down if you can't sleep (haha and please don't tell me sex
)