Re: Pregnancy possibly?
Hello and welcome to the HealthBoards. I hope we can be of some help to you.
The spotting could be one of two things in my opinion. Since it is brown, it is not new blood. It could be some old blood that became dislodged during the recent sexual encounter. It could be blood that is the begining of your next period that escaped before your period actually was ready to start.
I do not think you are pregnant either. Too bad it is a day too late to have taken the morning after pill which will stop pregnancy up to 72 hours after the event. If this should ever happen again, remember this product. It is available at Planned Parenthood for an inexpensive fee.
The soreness in your legs is likely due to being in a position that is not normal for you to be, and muscle strain that might have been caused. You say you don't remember much of it, so are you sure it wasn't rough? Even so, that would cause red blood to appear, not brown.
Hopefully your period will start at usual on Monday. If it does not, I would take a pregnancy test as early as you can find one that works.
As far as STD's. I don't know.
Since you had your period, I do not think you are pregnant from your last unprotected sexual encounter in January either.
I am concerned to hear about your choices to have unprotected sex with men you do not know, or even with ones you do! You are opening your self up the the possibilities of both pregnancy and STD's that could ruin your life. Have you considered getting yourself on the pill, or using a long term product that protects you from 3 months to 3 years at a time? There are too many choices of birth control that will protect you to allow yourself to go through this every time you have sex. At the very least, would you consider using a condom? There are more STD's out there than there ever have been, with new ones popping up all the time. You could make a mistake that would prevent you from having children when that time comes, infect your partners, and damage yourself. It is hardly worth it.
I hope you are lucky this time, and I think you are, but these pregnancy scares are meant to teach you how easily it can happen, and the impact on your life is immeasurable.
Please let me know what happens, I am interested in finding out the end of this story. Wishing you the best...