Sorry to reply to this so late.
Have you written every symptom down and handed it to your doctor? Sometimes if we go in with a random symptoms here and there, the doctor won't have a larger picture to work from, and will investigate things one by one. According to one of my doctors, having everything all written down for the appointment helped them to gather more details about my problem than if I'd tried to convey it all in the appointment.
If all of these symptoms happen as a combination, write them all down and give them to your doctor. They're the professionals who will be able to see a pattern, if there is one, and I'm not saying there is. If indeed there is a pattern to it all, it's so much more likely to be something easily addressed
All I can say is that the symptoms you've listed, and the nature in which they happen really don't sound like any of the big sinister illnesses. The functional neurological disorder (totally benign) I mentioned previously can present a lot like MS. In fact, lots of harmless issues can mimic the symptoms too.
It can be easy to connect dots that really are not there. I had lots of symptoms of MS, even down to showing actual clinical signs that actually warranted investigation. I was sure I had it. But everything came back clean. Turns out lots of my symptoms were caused by low grade, chronic inflammation that would come and go in waves. Addressing the inflammation is something I'm working on at the moment, and I'm definitely feeling improvements. Your own symptoms could be something simple like this too.
There's no harm in going to your GP with these concerns. They will know what's best for you, and hopefully help you get to the bottom of why you're feeling like this.
I know it's scary, especially when you're feeling real symptoms, as they certainly don't help with anxiety levels. Sending supportive hugs your way.