Mark, I think Southblues is right. If you have antibodies, you have MG but the number of antibodies doesn't predict how it will unfold. Sorry you have it, but it's not the end of the world or the end of having a good life. MG is an uncommon disease and even the docs don't always know a lot about it. You need to learn as much as you can and this is a good place to do that. Ask a lot of questions and search this forum.

MG is a tricky disease and you need to learn how it affects you because everyone is different. Most people find a way to do well despite MG but for some it's harder. Everyone makes it work. The more you learn about what works for you, the better. It may take some time to figure it all out. It's pretty much impossible to not worry about finding out about having a chronic condition. The worry won't help you. You will figure it out and it will be OK.

Sorry you have to deal with MG. Good luck, we all need some of that.