If you do, I can't reccomend the Viva New Vegas modpack enough. It's a wonderful "vanilla-plus" pack that keeps the feeling of the base game while fixing bugs, improving the balance and leveling curve, reintroducing appropriate cut content, and giving it all a consistently good new coat of paint. And it’s not crash prone, which even the base game has trouble with at times.
I can't help myself from tinkering further, but it's the best baseline setup I've found since the game released over a decade ago.
There are also sister packs done by the same team for 3, and Tale of Two Wastelands (another mod that puts 3 into New Vegas's slightly improved engine, which a lot of people prefer to playing 3 on it's own). I haven't used them myself, but they look to be up to the same gold standard.
Good luck, and thanks for sharing your experience like that. I've always been a proponent of sharing, because you never know if some detail might help someone else. Yours helps me and your attitude is inspiring.
Not fishing for a response, but for context I've been having minor issues with dry heaving and vomiting for about a month. Mine seems to be related to sinus pressure, far as I can tell. Already have appointments, but was getting nervous of what they might find, or that they might not find anything.