Hi i'm 17 and since Yesterday i've had light bleeding while i pee and theres a tickly feeling too and theres sometimes a little bit of stretchy blood at the bottom of the toilet bowl. its 4 days early for my period and usually before my period starts my breast are sore for about 3 to 5 days. I have light cramps in my lower abdomen and my lower back is sometimes sore and when i need to poop i can't. Could i be pregnant?or is it Something else? Any Advice on what it could be?