So sorry. Yes, this happened to me. It was so scary not to mention the pain. I soaked alot in epsom salts. Several times a day for 1/2 hour. I think the epsom salts really helped me. It felt good to me. I was fortunate to get a good OT that eventually got it working again, although the thumb is still atrophied. I had a cortisone shot that made the pain even worse. Just wanted to share my experience with you and wish you the best. I know we all can respond differently.
Oh, also the OT had me do a parafin wax treatment several times a week. I bought one and still do it (though not as frequently).
Hope you get the swelling down soon.
Linmarie