I had unprotected sex on Sept 2nd. On Sept 9th i had my period it was normal lasted 4 days. i have not had sex since then and i have not seen my period for the month of October. I have had breast tenderness and cramping around the time my cycle was suppose to come on but it did not. it is now Nov 1st and i still have not seen my period. I have no breast tenderness and no cramping and i am urinating normally. my doctor told me last year that my uterus was slightly enlarge so i dont know if that has any thing to do with it also sometimes when having sex it hurts. just want to know if i could be pregnant. I have taken 4 home pregnancy test and they all came back negitave. Can someone please help me????

Thanks in South Carolina