It's not selfish, it's natural. In fact, a reduction in sexual demands, if you can heal through it, might in the end lead to a better sex life for both of you, where you're not having to endure sex, but could actually enjoy it. Your husband might feel unhappy if his sex drive diminishes though, so you'd need to be sensitive to how that makes him feel about his manhood. Just take the time to heal, and hopefully with less sex in the equation you should both have time to get to know each other again.
Maybe it is selfish, I don't know... but isn't he selfish to make you do something you hate? There's nothing wrong with being a little self centred at times. You've been too giving, now it's time to give yourself a break. Don't worry... your reaction is perfectly understandable, and I also hope that his sex drive will diminish, so what does that make me?

Don't worry... be happy! (I've had that song in my head all day.)