Distant Husband

I feel like I'm losing my husband and I don't know why... He's constantly angry and the littlest thing makes him so mad. He use to be so kind and loving and understanding. But lately, I feel like he's pulling away from me. I have chronic migraines (they run in my family and I was in an accident a number of years ago) and they have been getting worse. He told me the other day he thinks I have an autoimmune disease or my head is screwed up. When he realized I didn't find it funny, he tried to make it seem like a joke. Things like this never use to be an issue. He was always so kind and considerate. I know he's struggling with depression. But he won't let me in to help or even talk to him. He just shrugs it off all the time. I'm starting to really worry... We have been married almost for 4 years now. I love him so much. We've even been talking about starting a family. But he's so concerned about my weight. I weigh 150 because I put on some Covid weight due to lock down. He is "uncomfortable with the idea of having his wife weight more than him." It's not like I'm over weight. Even my doctor says it would be a good time to start trying. Because of all of this, I'm starting to even rethink having a kid... the thing I have wanted for 3 years.... I'm sorry this is so scatter brained... I'm so lost and confused right now. I feel like I have nowhere else to go....