It must have been such a shock to get this diagnosis, no wonder you are having a difficult time of it, as it is still very new and hard to get your head around.
Talking to other people with MS might be useful, I see that you have tried groups, but it might be worth persevering with support groups, as it can be isolating after a diagnosis of this type and speaking to other people with a diagnosis may be beneficial.
Although things seem bleak just now, there may be various things that can help, both physically and emotionally.
If you’ve recently had a baby, the urinary incontinence may not be solely MS related. Help is available for continence issues, there are sprays or even Botox that can help, I know several people who have had great success with these.
MS is a difficult diagnosis to deal with and you life is stressful enough with several children including a baby, hopefully your partner is supportive, but he may also need help to understand the impact this is having on you and how best to help you, as it is still quite fresh.
You said you’ve not got much family support, but could you reach out to them? They may not understand the impact this is having on you and if you had good relationships before, hopefully you can get some support from them.
Have you had any contact with social work or OT? You might be able to get walking aids to assist you. Also, ensure you are getting all the relevant benefits you’re entitled to.
Do you have an MS nurse? Have you been offered any post diagnostic support? Please contact the MS Society for signposting if not. They can also provide info on support groups and practical help.
Do you know what kind of MS you have? I see you are on Tysabri, which was what a family member was on who had relapsing remitting MS. There are so many different types of medication and symptoms and how people react to medication can vary so much. They have been on a few different kinds, they were even on infusions at one point too, I can’t remember the band if what they’re taking now., but it’s a tablet. When are you next due to meet with your neurologist? It might be worthwhile discussing other options available, as some medication has side effects that may impact you.
Hopefully tackling these things will help you feel more in control and also get the support and help you need - good luck xx