I took a first-response pregnancy test which claims to detect pregnancy hormones 2-3 days before the missed period. I took the test 3 days after I had already missed mine. It came out negative, like the other ones I took. In the first place I had protected sex and the condom didnt break but because I was still stressed out, I took the morning-after pill. I also had sex 4 days after my period had ended... which makes it almost impossible for me to be pregnant. However, my period is 4-5 days late. Could this be because of the morning-after pill? Please help