Hi! My boyfriend and I have been together for some time now, and have recently been having unprotected sex. Since my last period, I have had many symptoms (according to several websites). I have had four nosebleeds, out of the blue. I have always had problems with acne, but there is some showing up in the most unusual places that are out of the ordinary. My lower back has been very achey. I usually have no trouble sleeping, but it seems I can't fall asleep, lately, until the very early hours of the morning. Also after intercourse with my boyfriend about a week ago, I bled what seemed to be a mixture of vaginal fluid and a brownish blood. Could this have been implantation bleeding, or simply something caused by intercourse?? Also, more dominately, my nipples have been extremely sore these past couple of days, but my breasts themselves do not seem to be sore. :confused: I'm very confused! Could you please give me your opinion on whether I may be pregnant?:o Thank you so much!