opinions ?

If you and your spouse been together going onto 3 years, living together for 2 and you literally have to have sex or pleasure him AT LEAST 2x a day EVEN IF you're in pain, on your period, never in the mood anymore, etc. Other wise he'll start acting like an asshole about it towards you. 
Do you think it's fair for him to treat you like this? Bitch and get an attitude just cuz you're to tired or, you're cramping, or just NOT in the mood.? Even giving head, I have braces at the moment so sometimes it's uncomfortable doing it constantly with the wires. And he still try's and begs you to do it. 
I'm so tired of having sex and doing stuff every single day since we've been together. Am I being selfish?