I am hoping you could help me. I'm 21 years old. I have been sexually active for the past few months and have used protection. Both my boyfriend and I were virgins before this so I'm sure we are both clean. However, my past two periods have been unusual. The earlier of the two started Sunday, May 8th and only lasted 3 days on May 11th. It had regular flow but I don't think I ever had a period this short. On the day I was expecting my 2nd period, I had insteasd these dark brown stains. I would have to change my panty liners more than usual because of these stains until I finally got my period. It was 4 days late, had regular flow, and lasted 5 days.It ended on June 14th. It is now the 16th and I am now having these dark brown stains again. I don't think this has ever happened around my period before. It has an odor as well.
These are the dates of my past periods. March 11th, April 10th, May 8th, and June 9.
I get rather paranoid about getting pregnant so I have used planned B at least 4 or 5 times from November to March/April. I have not used it since then. Am i starting a new cycle or am I pregnant? Does this sound like an infection?