It sounds to me from your description like you pulled a muscle (a muscle is in spasm) . It happens when a muscle needs to be massaged out and it gets attention but then you move incorrectly, lift too much weight, or put stress on it and it’s just not ready to stay relaxed and it cramps up. I suggest you go back to your massage therapist have her work it out again and then be aware that it needs to not be stressed for a period of time you can discuss with your therapist. If it is what I’ve described, then painkillers and muscle relaxers with absolutely no stretch, stretching it out for a couple days, then trying to get back into your regular schedule with only the lightest of pressure on the area and then waiting a couple weeks before you get back to regular activity. This has happened to me over the years. when I was younger the tendency was to work it out immediately and that just made the muscle hold in the spasm condition. You gotta give it time to relax out again before you start trying to work it.