Hi,
I'm 18. And my period is regular. I had sex in December 10th, 2012. Two months ago. I had my period in January normally. It was in January 6. now its February 10 but I haven't had my period yet. Can I get pregnant?
December was the last time I had sex.

Most likely not, if Jan was a real period, was it lighter or did it last very short.
But there are 100s of reasons for a period to be late, or even miss a period at times.
Are you taking any medication, did you take any morning after pills, are you under stress or worry. Has there been major changes in your life ?

But you can take a pregnancy test using first urine of the morning to confirm

Most likely not, if Jan was a real period, was it lighter or did it last very short.
But there are 100s of reasons for a period to be late, or even miss a period at times.
Are you taking any medication, did you take any morning after pills, are you under stress or worry. Has there been major changes in your life ?

but you can take a pregnancy test using first urine of the morning to confirm

Period in Jan was normal, like usual. I'm not talking any pills. I'm in stress because of university stress. But I don't miss periods. Even if its late it happens. And not really no major changes. Just usual. I'm really freaked out :(
And I didn't have any nausea or swollen breasts or anythng

I would say you are not pregnant, but a pregnancy test should confirm to be sure