There are literally hundreds of conditions (including very simple, non-sinister ones, like vitamin deficiencies) that can produce the same or similar symptoms.
So although nothing you’ve described absolutely couldn’t be MS, there’s nothing to suggest it’s particularly likely either. It could be any of the hundreds of other things. Although MS is “the most common disabling neurological condition in young adults”, it is still relatively rare - only about 1 in 1000 people. It is a diagnosis of exclusion, which means every other possible explanation would be considered first. MS is definitely not the main or only suspect, for every strange neuro-type thing that can happen.
Even if - worst case scenario - it did turn out to be MS - there’s nothing to indicate you are in imminent danger of a relapse, or that the timescale would be “a month or so”. Where do you get this idea? Relapses are unpredictable, and come with little or no warning, but for the vast majority of people, they are NOT every month or two, and indeed, it is possible to go several years between relapses. So even a confirmed diagnosis would not mean you were on the brink of a relapse within the next month. If you were unlucky, it could be so, but it’s equally possible to go ages without much happening at all.
One thing I will say is that MS pain does NOT typically respond to NSAIDs, so if you took those and they seemed to help, it suggests either that the pain was non-neurological (so not as likely to be MS), or else that any improvement was coincidental, and would have happened anyway - not as a result of the painkillers.