I last had my period the 1st of January and it is now February 8th and I have yet to get it. I did have unprotected sex twice in January on the 4th and 15th but have taken two pregnancy tests and both are negatve. Could I be pregnant?

You had unprotected sex, you can be pregnant, if you want to know for sure go see a doctor

This is funny.. but the same thing is happening to me right now.
Same scenario.

There is a possibility that because you had sex that you threw your hormones out of wack and your period is going to come late.

Having a female's body is a big guessing game.

One time this happened in the past and I ended up having my period twice in one month.

But the best thing to do is to go to your GYN and take one of those Blood Pregnancy test. They are more Accurate. And have them check you out. But I would only do that if it hasn't come by the middle of the month.