Me and my boyfriend often have unprotected sex. I've noticed just a very slight weight gain. This weekend we went camping, I smoke and drank all weekend. One night i got what i thought was food poisoning and I had terrible stomach pains and vommited a lot. Yesterday i got home and started bleeding, and haven't stopped since. I always have had regular periods, and this isnt one of them.It's very early and a much darker colour than usual. Did i have a miscarriage?