I had the implant fitted just over 2 years ago and it completely stopped my periods. Me and my boyfriend had rough sex numerous times over a 2 day period, one of the times it being unprotected and he cummed. The night after we had sex I started to notice very faint blood when I wiped but thought it was just due to the rough sex. However I then seem to be having a light period when I am having to wear pads and am getting a few small stomach cramps. I spoke to my doctor who said that the implant is fully effective for 3 years so there is no chance of pregnancy but I am still worrying!! I'm 18 and taking antihistamines for my eczema and hayfever tablets but other than that I am in good health. Could I be pregnant or is it just a random period? Any advice would be helpful!