I’m not newly diagnosed, but I 100% go along with Rachel’s opinion that it ‘sucks ass’.
I suspect you are both going to be going through an emotional roller coaster over the next few weeks / months / years. It takes as long as it takes to ‘accept’ that you have MS. And after 20 years I can tell you I have not ‘accepted’ it nor ‘come to terms’ with it. MS Is crap.
People say there’s all those stages like denial, anger, acceptance. I say knickers to that. It’s bloody bad luck.
But life does go on. And at least having been diagnosed, you’re not living the absolute hell that is limbo, thinking you probably have MS, being tested, and told it’s not, or it’s not yet, but might be in the future.
And now that you are diagnosed, you can get some disease modifying drugs (DMDs). These are designed to both reduce the number of relapses you have and to reduce the severity of relapses. Their efficacy varies, as do the potential side effects. Have a look at https://www.mstrust.org.uk/understanding-ms/ms-symptoms-and-treatments/ms-decisions/decision-aid
This tool will give you the run down on all the DMDs that are currently available. You may find that your options are limited, it will depend on how active your MS is, the view of the neurologist, and also what prescribing centres have been set up locally.
You should also have been given contact details of an MS nurse, if you’re lucky and you get a good one (to be fair, I think they’re all pretty good), then he or she will help you to get onto the DMD that is right for you. S/he will also help you to get in touch with other local services, depending on what you need, from physiotherapy to bowel and bladder and OTs.
All the best.