My period came 8 days late i have severe cramps and bleeding. and i had a clear fishy smelly discharge. i'm i pregnant or is it a really bad period?

Late menses: A fishy smell is not a sign of pregnancy, but rather possibly of a non-sti called bacterial vaginosis. Bv can develop when the normal balance of the flora in your vaginal tract is altered. Sometimes hormonal fluctuations cause this, and the fact that your period was 8 days late suggests that there was some disturbance in your usual hormonal cycle. See your doctor if the odour persists.