Hi im 22 and i've been on the depo shot for 8months recently i've been on 2 different sets of antibiotics together i still had sex whilst i was on them as i didnt tink they would interfere with the depo shot but the last wk i've been very tired have no energy my emotions are all over the place i've been upset and snappin at people yesterday and today i seem to be worse i've also been spotting blood since yesterday i took a pregnancy test today but it was negative my head is all over the place as my friend is pregnant and i have the same symptoms as her, if anybody has any advice i would really appreciate it as i dont know if im pregnant or not