Hi Leigh and welcome! I don't have any experience quite with what you are going through (though I believe my life long struggle with RA is a direct result from having rubella as a child) but I wanted to give you my support. Try not to stress about
the pain 'possibly staying' right now. Focus on what is improving and getting what you can better. Stress is NOT going to help - I know it's much easier said than done!!! I went years wondering if I would be spending the rest of my life walking like an 80 year-old or if I'd be well enough to have kids eventually (which - knock on wood - I was.)
Sounds like your strep throat was really in the scarlet fever category.
It's tough being in so much pain and raising a family. There are many of us here dealing with that as well and I hope you stick around. This place can be awesome therapy! Hopefully, as you get better, so will your pain and swelling. It takes time and you've made it this far! Hang in there!