Could i be pregnant if he did not ejaculate inside me and i took an ecp within 15hrs. after a month also pregnant test is negative.had bleeding for 3 day.

Very low probability: We never like to say never when it comes to pregnancy, but your situation, as described with emergency contraception and neg upt after a month make it low probability. I can't say there arent little coffe cups orbiting jupiter, right, i can just say its very low probability you are pegnant and after a month, no other intercourse, i would say its about the same probability as the coffe cup analogy.