Lots & lots & lots of Coasties, Squids, Ground Pounders, Fly boys... all branches have had their fare share of husbands who were away when the wife had a baby. It is an accepted part of military life. Is it loved by the wives? Nope, pretty much it isn't. But they manage. It isn't the worst thing in the world that can happen. You start your airman program next month, that's 4 months, then school... she isn't even pregnant yet. I hope the two of you get pregnant as soon as you would like but you don't even have a perspective delivery date. When the right little sperm attracts the right little egg at the singles get together... then start worrying about where you may or may not be!
It will all work out and that's something to worry about when the time comes. Added stress on either of you will not get the end result you are both looking for. Relax, enjoy, have fun, learn your rate and life will happen while you aren't watching.