Well the good news is, I was able to get out and get some groceries before the pain began to return, but it's much reduced currently from what it was yesterday.

It's definitely an involvement of both sides, the left being more pronounced. I don't think it's gone yet, but the cold packs and then warm bath (yes, surprisingly I can tolerate this!) I think pushed the pain away. At least I got some relief, even for a brief period