Hey! I’m sorry to hear your unable to sleep, i do hope you’re able to get at least maybe a few hours of sleep for tonight, and have a better one the next time!
I’d recommend moving the arm you got your shot on, move it in large circles; it’s personally helped me with the pain and swelling after a shot, you can just move your arm in slow circles since it may hurt, but it helps in the least so that it doesn’t hurt like crazy if you move your arm an inch!
As for cheering you up, here’s some bird videos! They’re nice but can be a bit silly too, hope they could cheer ya up!