How does getting your birth control (shot) work when you’re deployed ?

Get a written order from your provider. Get one before you leave. Ask about this at the SRP medical screening. See if this is something the aid station PA can do.

Many soldiers have reasons they receive this other than contraception since it’s a hormone thing as well.

Largely depends on location, but maybe you can have the meds shipped over to your location if it's something you can't have in possession for transport. I've had an Airman that needed something similar done since he couldn't hand carry the meds he needed but remained world wide deployable. I do know that took approval through our local base clinic and the downrange clinic and took a few weeks to sort out. I'd check and see if that's an option. Not exactly sure how that would work from a civ doc but it's at least worth asking and working with your chain or unit/base doc to accomplish.

Enjoy your deployment.

V/R
Bogie

Yes. Birth control serves different purposes other than preventing pregnancy. The shot may not be available. You may need to ask your doctor for a 90-day prescription for the pill form. Before you run out, you’ll need to ask someone from back home to get a refill and mail you another 90-day supply. Keep doing that until you come off deployment. Just know that it can take up to 4 weeks to get your mail depending on where you deploy to.