Hi I'm Whitney I'm 17 and have a wonderful loving boyfriend. So I'm not sure if I should go to the doctors or wait a bit longer. My last period was October 12th to the 17th, I took a cheap pregnancy test at the start of December and it said not pregnant. Its now December 15 the and still no period but I'm having pains in my lower stomach. I'm very worried and don't know what to think please help