[demasoni]

Congrats on your PB!

I don't believe the physical pressure of a new depth caused contractions on the ascent.

What was your previous PB and depth progression up to 21m?

Were you "panicked" at the turn knowing you just hit a new PB?

What was your breath-up like?

Did you have a samba or any other complications?

Contractions on the ascent aren't necessarily a "bad" thing. Most divers experience them, especially on a PB dive.