I Got The Depo Birth Control Shot. After That My

I got the depo birth control shot. After that my vagina has suffered from so much pain. At first I noticed It was a lot tighter than before which made sex very painful. I then was infected with herpes. After taking care of the out break my vagina continued to itch and sex was still painful. A week later I started my period which I have been on for 3 months now. The blood is more of a brown discharge now. My vagina itches very bad and my right labia is swollen. What is wrong?