Any pregnant military wives w/husbands deploying soon?

I just found out im a little over 4 weeks pregnant and my husband and I are ecstatic...but- he is due to deploy in a few months and its supposed to be a 6month deployment which means I will have to go through the majority of the pregnancy on my own and possibly deliver without him here (there's a slight chance they may let him come home for the birth). I have my sister and mom here for support but still have a lot of mixed emotions about him missing a lot of stuff and being on my own during this time...has anyone had to do it on their own as well and how did you cope? Even if you aren't military but can relate i'd love to hear any words of encouragement or advice..