Okay so i thought that my period came early on January 6th and i'm not sure what day i was supposed to start but i know its after the 6th almost a week after. I've been having some pregnancy symptoms such as nausea, lower abdomin cramps, lower back pains, tender breasts and nipples, headache on and off, and slimy white to clear discharge. i took 2 pregnancy test. 1 this morning and 1 two days ago. both were negative but i had unprotected sex (without the pullout method) 3 weeks ago, 2 1/2 weeks ago, 1 week ago and about 7 days ago. Could i possibly be pregnant?