Progesterone Spike? New to BBT

St

This is my first month charting BBT because I didn’t feel like I was ovulating and wanted to try this method. According to Glow I O’d cycle day 17. I didn’t expect an increase because I’m uncertain that I’m actually ovulating. However, I did get 2 major spikes in the last 2 days but they almost seem too high? Any chance this is just inaccurate? I’m afraid it’s incorrect and I won’t ovulate and it’s just another month without any hope of conceiving.