help !

Okay darlings so here's my issue. I thought there was a possibility I could have been pregnant this past weekend so when my boyfriend and I saw each other I told him when we made love he came inside of me maybe like 20,000 times we took a test to be sure and it turned out that I wasn't pregnant, it's been 5 days since the first time he came inside of me and I haven't been feeling like myself mind you my period is supposed to start on the 28th my boobs hurt I have cramps and I keep dreaming that I'm pregnant . So when I use the bathroom today I go to wipe and there's pinkish blood and I call my bf right away because in reality I don't know if it's way too soon to kno if I'm pregnant or if my period is heading it's way over early.