HELP!!!

Stephanie • First born arrived 4-9-17. It's a girl💗Baby boy arrived 9-8-18💙
I'm on cycle day 7 still spotting from my period. Decided to start <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> to detect my surge. I have never used this brand before but it look positive. I have never had a surge this early before could this be invalid?