Sex and sleep

Chelsea
I'm hoping someone else can shed some light on this:
My husband and I are more intimate and night time and I have a HORRIBLE time getting to sleep afterwards. We go to bed between 10-11 every night and whenever we are intimate I'm awake until 2 or 3 in the morning (I would say on average the act is only taking 30 minutes or so). Has anyone else had issues like this? Any recommendations for getting to sleep? I've tried breathing exercises and several other things I've searched on line. Thank you in advance for any suggestions