A few weeks ago my boyfriend and I had unprotected sex around the tim I was fertile. Now my boobs are constantly sore, I m a lot more tired than usual, I get very nauseous when I eat, it appears that I smell things I really didn t before, and my period was suppose to come today but it hasn t. I took some pregnancy tests on Wednesday but they were negative and I took a dollar store one tonight and it was negative, but is it a possiblity that I am in fact pregnant?