Hi I'm rather worried as I'm suppose to be on my period but I only have blood when wiping, but now there's nothing no blood at all, I'm currently having unprotected sex with my partner, but as I have always had unprotected sex and never been pregnant I always thought I couldn't get pregnant. I usually have really bad back pains, cramping and havey bleeding with my period but nothing this month, I'm always regular and should have come on the 25th. I don't know what to think please help.