Hello Jamie Mass
Welcome to the forum.
It's great that you are here, to learn about PTSD and get some support along the way. PTSD can be a roller-coaster of a ride for the sufferer, but obviously it affects their loved ones too. I echo what the others have said, and read, read, read as much as you can about PTSD to help both you and your husband. Perhaps you could persuade him to take a look here too?
The next most important thing is to look after you. Like I said, it can be a difficult journey, and you need to be well, in order to support him. Get yourself some support, someone you can talk to, and use this forum. There are a great bunch of people here, who lovingly support people with PTSD - they will be able to offer you guidance along the way.
All the best
Cherryblossom