Getting back up on that horse!!!

Ok, so I have regained composure and refocused.
So...
I would still like opinions.
Is it better to stay in the house and let him possibly see my setbacks or is it better for mt to leave and get thing under control first?

He says if I leave it's a mistake as I will only think he has spent the week cheating on me.
I just honestly feel like we need this space.
I feel like I need time out of the hurt and stress of this relationship to get my personal issues straightened out.
I don't know if that is a common feeling amoung WAS and I certainly don't want to do more damage.