hi, last year around November i had a surgical abortion and got the depo shot, few days later i had unprotected sex using the withdrawal method. i took a pregnancy test twice 5 weeks later and it was a really faint positive, i then took another one a week later and it was negative,i got what seemed to be my periods in the 6th weeks for 7 days and i got it again in January. i haven t had pregnancy symptoms that i had with my previous pregnancies but i am worried. i don t know if im pregnant or suffering from depo withdrawal. i have not gone for my second shot because ive been having all sorts of pregnancy symptoms like sore breasts and sometimes fatigue and headaches. what could be the problem?