Hi Josh, just keep an eye on your symptoms, neck and shoulders are common. I was similar to yourself, with only one or two symptoms to begin with and then I began feeling my neck and shoulders aching. Then suddenly, whilst showering, I turned my head and I felt a loud crunch in the back of my neck, and I couldn't move my head for a minute or so. It did improve a little, for a while, but then began slowly worsening.
However, everyone with MG experiences different symptoms and at different levels of discomfort, so it may well not be the same for you.
My advise is as follows:
Grab a diary, and each month write down ANY issues you have.
MG symptoms creep upon you slowly and you can easily find yourself just putting up with them.
Keep looking back through your diary, to make a comparison in order to really see if you are stable, or have gotten worse.
If you are worsening, DEAL WITH IT, and take action.
Do not simply take the word of consultants and doctors, telling you its arthritis, or whatever, and do not start doing neck exercises or physiotherapy. It will worsen the situation.
Only you know your own body.
I wish someone had given me this advice 3 years ago.
There will be something out there for you should you worsen Josh, but you need to take action yourself, and not just rely on the word of healthcare professionals.
Fortunately for me I eventually came across Vyvgart, and it was a game changer, so if your condition should worsen, with all the new drugs available today, you WILL get it sorted, but in my experience, the little niggles that can appear, WILL very likely be MG connected.