So my period came about 4 days late. It was supposed to come on April 14, 2016 and didn't actually come until April 19 a little after midnight which is weird. I usually get it in the morning when I wake up or in the afternoon. Anyways, it was heavy bleeding the first day and it only lasted about 2-2.5 days. Is this implantation bleeding or is it my period? Can I be pregnant? My BF and I did have unprotected sex and did the pull out method.