Hi , in the month of February my boyfriend and I had unprotected sex around the 19th (he came inside me) on the day I was suppose to have my period the next day, it came on but it came on about 4 days late (February 23rd) I had a normal period .... Then we had unprotected sex 2 days after it went off (but use the pull out method) and also had sex the next week or two after ( he came more than once but not instead me and use the pull out method multiple times) And about two days ago (3/24) we had unprotected sex again ( he came inside me) .... I normally have back pains 2days before my period , I have experience backaches but still NO period... Could I be pregnant? Is it to early to take a pregnancy test