So disappointed and upset and not sure what to do

So tonight my husband ruined my opinion of him and basically made me feel like I don’t even mean anything to him at all. We’ve had what I would describe as a very loving relationship for last 10 years and he’s now gone and undone everything. We have been trying to conceive for 6 years and recently I’ve been getting really low about the whole thing and I’ve been feeling down and upset quite a lot as it is very stressful and frustrating and just very heart breaking at times. Today his sister made a very hurtful comment related to the baby front and I didn’t even say anything to her, I stayed nice and polite but when we left I told him that I thought she acted like a patronising cow. Because she did. And he goes off on one, defending her, saying I have got no right slagging his family off, shouting at me, and then going all distant and saying he’s not in a mood to be discussing it right now and basically just being a complete dick about it. I’ve never felt so betrayed in my entire life. I would always be on his side if any of my family ever hurt his feelings about anything, I would never ever let anybody be inconsiderate, family or not. It made me so upset knowing that he just doesn’t care how his family treat me. He promised to always care for me and protect me but he’s obviously not prepared to do it. I don’t know what to do, I don’t feel like I want to even talk to him right now. He has really hurt me more than ever before.