Thanks for the replies everyone.
Answer some questions. Yes the women are getting off, in most cases multiple times which is why they're feeling bad.
I am certsinly enjoying myself, but threesomes do get physically tiring after too many in a row. Good thing i am atleast moderatly athletic...
To make it more interesting this is a d/s relationship in that i am the dominant over each of them, and being submissives they often dont feel comfortable placing their pleasure over others.
I have always viewed sex as something intimate and a way to show affection. Going to try and spread out the attention a little, and work on getting them more comfortable with being selfish a little bit with their own satisfaction.