Hi sarah,
This has had to be a terrible ordeal for you and I am so very sorry that you've not had any real answers.
Also to be a stay at home mom with a little one, how my heart goes out to you!
I am thankful that you have a doctor that you seem to really trust and like, and hopefully if necessary, he will do referalls for you.
The following link might be of some help:https://msfocus.org/Magazine/Magazine-Items/Diseases-That-Mimic-MS
Also:https://www.nationalmssociety.org/What-is-MS
I'm thinking that any and all information gathering right now for you, could be nothing but helpful and maybe as you're exploring these sites some grain of information will present itself to enable you to discuss with your doctor or maybe ask key questions which could help?
We are so glad that you found us and reached out here, and it's my hope that you'll feel a little less alone!
Please keep us posted and let us know how you're doing!
xxxx's Janus