No sex drive

It has been 2 1/2 years since we had our son and I still have NO sex drive. I know there are psychological issues there... having a hard time "sharing" my body, switching from being a mom to someone's sexual interest in a matter of seconds. It honestly doesn't help that my husband bitches about it constantly. We have recently made an effort to have sex every week and have been doing well. Now that I have my period this week, he just started complaining about never getting oral sex when intercourse isn't an option. I know he's gotten frustrated with our sex life, but the more he bitches the more I want nothing to do with him. Anyone else in this or a similar situation since having a baby?? Any suggestions on how we can find compromise? I feel like any effort I make isn't good enough for him because it's not exactly what he wants, and he thinks I'm being selfish because I never "think of his needs".