Period? Or early pregnancy?

Felecia

I need some help ladies. It’s a somewhat long read but I’m confused and not sure what to think! Hubby and I have been TTC for a while now. We didn’t really track this past month because everything was so busy. Fast forward to now and I am 5 days late (according to the app which has been pretty accurate). Since about 6-7 DPO, I have been having mild cramps on and off. Last week started the dizzy spells, hot flashes, slight nausea, totally exhausted, extra discharge, and my breasts have been heavy/sore feeling. So far (as of Saturday morning) I am testing negative. Yesterday I had the tiniest bit of pink blood in my discharge but nothing after that. I didn’t think anything of it and hubby and I had sex. This morning I am experiencing mild cramps and have had just a tiny bit of pink blood in my discharge again. Nothing major. When I get my period, I cramp really bad for the first day or 2 and sis shows up with a bang. No spotting or anything. It’s full force. So I’m not sure that this is my period. I just don’t know what to think now or what I should do! Any insight would be very much appreciated!! ♥️