Is it possible I'm pregnant?

I'm 18 years old. And I'm a virgin. last saturday me and my boyfriend were messin around, he was in his boxers and I was in my underwear and leggins, he was on top and grindin against me, he came but I carried on grindin against him. On monday when I went toilet I noticed my discharge was a brown colour and had like a mucas texture which I thought was my period, it wasn't though I've had this kind of discharge for a week, my breasts have been a bit tender and I'm worried that I could be pregnant I dunno if it could be possible?

First of all, to get pregnant the semen needs to get into the vagina, if it did there are 5 signs of pregnancy, which usually occur within the 1st month or so after conception.
1. Sore Breasts (many girls have sore breast during their period to though so make sure there are more signs).
2. Fatigue (tired all the time, can't stay up as late as you used to despite a similiar work and sleep schedule).
3. Urinating a lot, (this is like every couple of hours you got to go, no joke, you'll notice.)
4. the skipped period, (the classic sign most people know skip a period, but give it a week or so to come late)
5. Nausea, (most women have morning sickness, however its not always in the morning and some people, myself included never have nausea... but most do).

If you have several of these signs then go buy a cheap pregnancy test, they're the same as they use in the doctors office but way cheaper... and check...
If it makes you feel better get one anyway, no matter what the symptoms, and put your mind at ease...

By the way, if your going to fore play and have sex... I'd look into planned parent hood near you and get on the pill... just to be safe.
Good luck!

If there is the possibility that his semen leaked out of his boxers, soaked into your panties and rubbed some on your vaginal opening, then there is a small chance. Remember, these guys are microscopic and they can swim! So there's always a possibility, much like pre-c*m touching the outside of your vagina can also possibly get you pregnant. The chances are small, but it can happen.

If you had the discharge before your period date, then it could be a sign that your period is coming. If it is during, and you just get a brown discharge all week, then that is quite odd and it may be a sign of pregnancy.

Either way, get a home pregnancy test and use it as per instructions. If you want to continue sexual play like this, it'd be wise to get on birth control (pills/injection/implant).

Well, as mysterywolf said, the semen would of had to go through his boxers, your leggings and underwear and find it's way to your vagina. It really doesn't seem very likely but there's always a possibility. When sperm have a goal in mind they sure do like to reach it.

When you org**m your muscles tighten and release therefore pushing stuff out of your vagina, this could be the cause of the "brown" discharge (old blood is brown...gross I know). You'll notice that after you have an org**m you'll get more discharge, perfectly normal so don't freak about it.

Now, if you actually miss a period then take a pregnancy test, but it doesn't seem very likely that you're pregnant.

Good luck