Could I be pregnant??

Sheree • TTC #1 🙏🏾🌺✨ Miscarriage on 6-22-22
Ok so glow said that AF was supposed to start Friday but she didn't but I started spotting Sunday afternoon and its light enough for me to wear a panty liner...it's not bright red. It's a light brown color. I've had the pms symptoms but no red bleeding.... What could be going on???