birth control
"I took the shot once and from the week I took it until the week it ended it was literally impossible to have sex, it hurt everywhere. Inside and at the opening. We tried to have sex maybe 4 times, just for a few seconds until I couldn't take it anymore. Husband went crazy! The GYNO said that I didn't fit the profiles for anything like endometriosis or vulva-something, nothing. I was a medical mystery with no reason to be having so much pain. There weren't other symptoms or side effects for anything, the doctors were all just like "I don't know -  good luck".
And I bled for 80 out of 90 days. Profusely.
As far as protecting against pregnancy, I don't know, because I had sex a total of 48 seconds in 3 months."