I got a NExT, xM1, and xG3 V2 installed a month ago… and immediately drove to the beach the next day. I gave my implants 24 hours before going in salt water, but less then that for a pool. I would definitely recommend grabbing some waterproof bandages (nexcare are awesome for this!) to avoid getting dirty water in the wound. Like others have said, you definitely want to avoid infection.
Once the injection point is healed, swimming shouldn’t be an issue. I think I was able to swim without a bandage within ~72 hours, but YMMV. The NExT is smaller then the xM1/xG3, so the wound should close pretty quickly for you.
Keep in mind that the more you use your hand, the more the implant will migrate. The implants in P0 migrated quite a bit for me. You’ll definitely want to watch them to make sure that they don’t get too close to bone.
Even though I didn’t, I would recommend waiting a week or two before swimming if you can. It’s ok if you’re not able to give it that long, but it would really help with preventing migration.
I didn’t self install, so I can’t offer much, but I can promise you that the hardest part will be preparing mentally. You need to make sure you’re actually able to stick yourself with the needle before you take it out of the packaging. Like Athro said, once it’s out of the packaging there’s really no turning back.
That being said though, the needle really isn’t that bad. The initial piercing is semi-painful, but I have a pretty low tolerance, and the NExT was maybe a 1.5/10 at most in terms of pain. My installer went in from the wrist side as well, so it should hurt even less if you do it the recommended way (which, of course, you should).
Once the needle is in, there’s no pain, it just feels a bit strange. Be sure you pull back out just a bit so that the implant has a pocket to go into. If you carefully read all the info DT provides, you should be fine!
You should get that once your order ships!
Also… welcome to the club! I know you’ll love the NExT once you get it implanted. It’s an amazing piece of technology. Keep us updated on the install!