What to do ?

So I'm engaged to a marine , it's usually always amazing he calls when he can and we talked for hours about anything we are getting married on the 27th and the last week he has just been super distant since I found out I had a miscarriage... I know it's hard shit it's hard for me ... but I wrote him this long ass letter just telling him how much I live him ... 9 pages long ... and that he means the world to me and I didn't hear from him all day and I called him a couple times and when he picked up he told me he fell asleep before finishing them and we talked and got off and that was 7 yesterday ... he isn't working he has 3 day weekend ... I texted him goodnight and he looked at it and didn't respond... and he liked and shared shit on Facebook but didn't text me or anything and I don't know what to say or do .... I told him I'm turning my phone off for the day so that he doesn't have to feel inclined to text or call but I'm really hurt rn