I'm on your boat. My husband and I just ETS'd from Hawaii and I found out that I was pregnant when we moved in with my parents. Try getting an ultrasound through tricare first and see if you can get some prenatals. As for when you get out, try to apply for medi-cal. I'm doing it now and I'm currently going through a little bump, but for the most part I've been told that you can get emergency insurance for ultrasounds and stuff. Basically, medi-cal can help with you all pregnancy related things. I hope this helps! If you want more info on Medi-cal, I can fill you in with what else I find out! :) congrats on your pregnancy!
Take it one day at a time. Make a list and get the things done. You have awhile until u need to think of baby shower, so until then get the really important stuff out the way. You will be fine don't stress to much,