Hi Confetti,
I'm so sorry for you, you must be so stressed.
If it was me I'd INSIST on at least an opinion of another expert.
Can you could talk to your GP ? ( even either a phone call or appointment)and don't hold back on expressing your concerns and stress over it all, and hopefully they could push for a quick appointment with someone else for you? for another opinion.
GP's are better at getting you in quicker with the specialists, I've found.
That's just me, but I feel sticking up for what you want is important. It's your illness, not theirs, you should be allowed to feel satisfied with what's planned for your treatment.
I don't think it's fair.
Hugs,
Cindi xx