Prepare yourself for possibly/probably not. As I recently explained to another poster (Froo), even textbook signs aren’t usually sufficient by themselves for a confirmed diagnosis. This is because they only capture a snapshot in time, and don’t prove that it’s a recurring or ongoing problem (the “multiple” part of MS).
So even if you have signs consistent with MS, it may still be the case that you can’t be diagnosed without more, to be absolutely certain it couldn’t be just a blip.
I wouldn’t like to say for sure that you absolutely couldn’t be diagnosed (a few here have been diagnosed very quickly, apparently without the typical wait-and-see) but I think it’s more likely that judgement will be reserved until there’s evidence to show it couldn’t be a one-off. It’s possible to have an MS-like attack, but NOT go on to be diagnosed with MS, because there’s no evidence of it ever happening again.
Diagnosis is usually more of a process than an event, often spanning months, or even longer. Also there are a few rare things that look like MS, but aren’t. The neuro would have to be absolutely sure it couldn’t be one of those rarer things, before deciding on MS, and may want you to have further tests.
Sorry I can’t tell you yes or no. My own experience was that I think my neuro was pretty sure I’d turn out to have MS on the day he first met me, but he wasn’t able to make a formal diagnosis for about another eight months.
I hope it goes as well as may be on Monday, whatever happens, but that if there’s no definite answer, you will understand why.