Sorry about your DH. I have also recently been diagnosed with RRMS after similar symptoms to those you describe. I am still getting my head round it, its a very strange and unpredictable disease. I have found the MS Nurse to be a real help so if you can get access to one asap I would do.
Your DH might be eligible for disease modifying treatment and, if so, there is a bit of a mind boggling array of treatments, all of which are taken differently and come with different side effects. That said, I have recently started copaxone, that's a once a day injection and not had any problems so far other than it stinging.
Your DH will need to take time to get to know his symptoms and what makes them worse. This will be hard on you too as it is difficult to understand it and most symptoms are invisible. I have felt really up and down so he is likely to feel emotional about it.
If he is working he needs to think about what he tells his employer, that will, of course, depend on his relationship with them.
They told me not to Google, but of course I did. I actually found it helpful to research but there are so many different experiences of this so its impossible to draw conclusions about how your DH's MS will manifest itself.
There are good MS sites, MS Trust is good and Shift MS aimed at younger people.
Take all the support you can, especially with a tiny baby, I am learning to swallow my pride and realise that people really want to help - but its an adjustment and hard.
PM me if I can be of any help but I hope that's helped a bit.