i've been having this cramping, back lower left side pain for a week now.. I had unprotected sex with my bf couple of times and dont know if im pregnant or now..2 days ago i start feeling dizzy and yesterday i have little blood and also this morning when i pee. my period is not due til saturday.  should i take a test now or wait. im 37 y/o and dont know if i can still get pregnant or not..