What is going on?!?! AF due 22/23

Nae
I had implantation bleeding my last pregnancy and I swore it was my period. I literally could smell the blood (tmi sorry), and It was red and I had cramps and everything and it last like 1.5 to 2 days. I feel like either I'm experiencing that now or I started AF early which is due 22nd or the 23rd. Is anyone else going through this???