Wierd sex craving

I have always enjoyed sex. Recently hes made a few comments and deffinly pulled away sexually. This pregnacy has me craving wierd things in the bedroom that we dont normally do. Like butt stuff. In my head if your wife randomly wants to do butt stuff guys would be very excited. He used to nag me about letting him put it up there. And now that I want to I can rarely get him into bed. He says hes too tiered but then will go jack off in the bathroom after I get shot down and go take care of myself. I'm so frustrated he wont buy me a new vibrator his reason was his dick should be enough but I'm not getting his dick! He also made a comment about buying me lacy underwear that it wouldn't look sexy on me right now referring to my pregnancy and said he just cant imagine a pregnant woman being sexy? Do you think that's the reason I'm having such a hard time getting some nookie from him is because I'm pregnant and not sexy right now? Pic to show what I look like aka not sexy anymore