Hi, i'm a 22 yr old female, i was hoping maybe some of you might be able to offer me some advice or let me know what you think, please. Well, 2 days ago i had sex with my bf, im on the pill and we didnt use any other form of contraception, i did get sick the night previous to this because of something nasty i drank, but it was 5/6 hrs since i took my pill and thats supposed to be okay. we had anal sex 2/3 days before this, neither times did he ejaculate inside me. Anyway, the thing is, the morning/afternnon after when i was in college i found blood(dark) in my underwear, just a small bit like at the beginning of my period, but that was it, just that little bit, no pains or anything, my mucus after that was normal and still is. I'm due my 7 day pill break 5 days from now and my period usually comes mid/last few days of this break. I also should mention, i hadnt had sex for nearly 3 weeks up til those last 2 times as i was on antibiotics and needed to give them time to leave my system, i started a pill pack during this time. I'm really worried, i'm not sure what this blood was, im hoping its just from the sex, but i had none during or straight away in the morning when i woke up :-S just this small bit later on late in the morning/afternoon. Im so worried, could be implantation bleeding? Ive read that usually happens 6-12 days after fertilization. It would only have been a day after for me, or 4/5 days from the previous time. I know im just going to have to wait to see if my period comes to really know, its just im so worried and hearing some opinions from other women just seems like a good idea until then. So please any thoughts would be welcome. Thanks