Muscle spasms

Newly diagnosed with OMG, but the Mestinon worked so well on my leg muscle weakness and fatigue that they are looking more towards General mg. So far all of my antibody tests are negative though.
My question is does anyone else suffer from debilitating cramps? I have always had muscles spasms and have been on muscle relaxers for 20 years. Now my hands and feet are contorting in a very debilitating way and as soon as I lay down calve and feet cramps get so horrific that I am hollering out in the middle of the night. Constantly having to wrap Heat around my legs and feet. There are days that I cannot even hold a fork correctly because of the contorting spasms.
When I messaged my new neuromuscular doctor she told me to ask the Doctor Who prescribes my muscle relaxers to allow me to have more. I'm already on four Baclofen a day with a Flexeril added to the baclofen at night. She acts like it is completely unrelated.
Is this just me or has anyone else experienced this? If so are there any tips on how to deal with it? I cannot do stretching. I was in PT for something we thought was unrelated and no matter how much she altered my program stretching caused my spasms to become much worse.