Big O before or after him?

C&G <3 • Whelp we are a comfy family of 4
A little TMI but a thought non the less..... do you think it matters if you have the big O after or before your man? Again TMI but I know if he is tired and might cum before i do I will give myself the big O after he has cum. Does anyone think it helps or hurts or is better or worse to come before or after?