question: I only got the depo shot 1 one time I had my 1st cycle 2 weeks later and didn t have a period for 3 months and failed to go back for my next 2nd shot. Ive engaged in unprotected sex since off the shot had a period for 2 weeks a month later and 6 weeks later I had a period for 3 days but I ve been having a lot of pregnancy symptoms