Why won't he touch me?

It's been 7 weeks since I gave birth to our son who we lost at 18 weeks. I went to my doctor he said I'm back to normal, I'm healed and I can continue with sex and normal activity. That was a week ago. My husband keeps treating me like I'm fragile I haven't had sex with him in about 5 months I miss it. I've tried initiating sex but failed. He just won't touch me. He won't go past kissing and cuddling but nothing more. I've been with him for 6 years and we've done just about every sexual act there is. So why won't he touch me. Does he not find me attractive anymore, I still look the same I didn't really gain weight during my pregnancy. I feel awkward talking to him about it but I'm gonna have to. Sometimes I wonder if this is his way of grieving the loss of our son.