Welcome to the club. This happened when I was 16. You'll adjust quickly, especially since it's the non dominant hand. Just be careful reaching for things, bumping the tip of that stump hurts like hell. For a few years, you'll have phantom pains and itching, but nothing severe. I have more issues with the middle finger, that got cut badly also and they had to put in a prosthetic knuckle, which never worked.

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