Hi jesxes and sorry about the possibility of MS.
You and your Neurologist can decide if trying steroids (IVSM) is a good option for you.
Unfortunately, steroids are not a cure all for symptoms and it is possible for symptoms to resolve on their own. Many with MS learn to live with some symptoms
It took 3 months for me to be diagnosed (PCP, referral to Neurologist, testing, diagnosis). During the entre time I was in an acute exacerbation(relapse, attack). After diagnosis I was given a prescription for oral steroids. It took 6 weeks to see any improvement and a year for recovery which included trying to regain mobility. I was diagnosed at the age off 23.
Take care.