Did I ovulate?

Sowjanya

Hello, I have PCOS and I ovulate around CD 26-30 every cycle. Last cycle I ovulated around CD 27 and my basal body temperature increased from 96.65 F to 97.7 F. This cycle by Basal body temperature increased from 96.65 F to 97.2 on CD 31. Why didn't my bbt increase like last cycle.? That means I Didn't ovulate this cycle?