Hi I have been on the depo for 4years this is my first year off. Me and my boyfriend have been doing the pull out method. He has never cum in me and we have never had a pregnancy scare. We have been doing this for almost a year now. In the last two week my breasts have been swollen and hurting like crazy. I am spotting and have back ache with some haed aches. My apertite has increased and I get the odd cramp. What could this be?