Need help!

So i finished my period last week and according to Glow ill be fertile next week.. but the past two days ive felt as if i started my period (you know, like you feel it coming out) but its been clear. And then today ive been cramping a little bit on my ride side (left ovary was removed in 2011) could i be ovulating this week? I also have PCOS but my periods are pretty regular since i had my weight loss surgery in 2016.. has anyone else experienced this? Should i get an ovulation test just to see?