I had vertigo for a few weeks as my first symptom. Then tingling in my feet (sorry--I'm sure that's not what you want to hear). Weirdly, this was bilateral, which I'd been led to believe would be very unusual in MS. Then I had optic neuritis in one eye. FINALLY after that I was diagnosed, got on a treatment, and have had no symptoms since.
I understand how worrying and scary these kinds of symptoms can be, but it's important to remember that the vast majority of people who experience these sorts of things don't have MS. I think it's difficult to diagnose precisely because things like weird sensations, pins and needles, tiredness etc are also symptoms of many more common conditions. Once you've got it in your head, you'll also start imagining loads more symptoms or focusing on every little eye twitch.
If you symptoms get significantly worse with heat (a hot shower etc) then that's probably a red flag to mention to the GP. If your symptoms come and go randomly otherwise, that would sound less like MS.
The best thing you can do is just relax and try to put it out of your mind while you wait to see a doctor about this. I know that's easier said than done. If they don't resolve the issue and you know you'll worry yourself sick over it, then honestly I would recommend exaggerating your symptoms and insisting on an MRI. It's the only way to know for sure, and if it does turn out to be something neurological then it's better to find that out early. I regret the time I spent having my symptoms dismissed.
Sorry for the long post. To sum up, I would feel fairly confident that this will turn out to be something completely benign. But if you don't get a satisfactory answer, then definitely fight for more investigations.