I ovulated on August 2nd, had sex on the 1st 2nd and 3rd (all unprotected) period was due August 16th, today now August 18th still no period, heaps of Vaginal discharge though, having period like cramps for like five days now, my symptoms of pregnancy are: sore nipples ( they left like four days ago) cramps nearly everyday, neck and back pain, kinda tired not heaps though, bloating, lots of gas and constipation, and a sore throat and stuffy nose, what do yous think are my chances, I can't get a pregnancy test till my mother tales me into town, which will be in like a week ( I'm only seventeen) can't let her know till I find out if I am, please help..