Extreme cramping no period?

Hi my period is 2 weeks late which is unheard of for me cuz mine goes like clockwork. Its still not here and my last one only lasted like 3 days which is unusual. Preg tests are all negative. Im having all the symptoms of early pregnancy. With the cramps im having a thick white discharge but im at high risk of ectopic and those sometimes dont show up on tests becuz they dont let off as much hormones. What do u think? Help??