First of all, happy birthday! I hope your day is as wonderful as you are.

It's really hard to be stuck at home. I get stir-crazy a lot. I find the best thing for me is distraction, something (or a combination of things) that occupies my mind so that I'm not so mind-numbingly bored. I play The Sims obsessively--it's silly, but it requires enough attention that it keeps my brain from going to the dark and twisty place most of the time. Other times, I like to put on Netflix or a DVD and knit because that occupies my attention and my hands. It doesn't totally cure the boredom and loneliness, but it makes it more bearable. What works for you is probably going to be different than what works for me, so you might have to try several things.

I hope you get some relief soon.