Hey, I'm 19 years old. I was on Depo for three consecutive shots. My last shot was April of 2012. April first of this year ,2013, I spotted and cramped very bad. Just for that one day tho. May 23-28 , I had a cycle. My boyfriend and I have unprotected sex, I didn't come on my next cycle (June 20). Am I pregnant or is the Depo still in effect ? I have had bad headaches and slight cramping. Please help !