6 days late period pink mucus spotting. possible pregnancy?

Ok so I've been having unprotected sex for almost 2 months now. We are trying to get pregnant. I am currently 6 days late for my period....... I woke up today and when I wiped there was some pinkish mucusy discharge that is super super light. Could this be like late implantation bleeding? I've been super crampy like I'm gonna get my period and having bunches of pregnancy signs like fatigue and nausea and diahrra ...... I'm usually a very calm person but last night I was incredibly irritable. PMS or Pregnant?