I had sex with my SO on Friday Oct. 10 . I was ovulating, I still have not had my period this month, I am gaining a little weight. I have severe headaches, and nausea during mornings. My boobs are tender/sore and they are getting a little bigger. I took 3 tests, 2 positive, and the earliest one I took was a negative. The last one I took was on Friday and it was positive, but I don't know with 2 different answers. I need opinions, I have never been pregnant before and do not know what to expect. Help?!