My boyfriend and I had unprotected sex several times on 1/7. And quite a few times a week prior. I have been off Birth Control for 2 months now, and having regular periods every 21 days or so. I have been feeling sick to my stomach, headaches, lower back pain, and cramping. No breast tenderness, but they do feel a little swollen. I should be starting my period on the 15th, but I'm wondering if I can take an at home pregnancy test and if it will give me a proper reading, or if I have to wait till after I miss my period. It would be my first time being pregnant, so I would like some fast answers please, and thank you. :)