I don't think you are stressed out of all proportion, I would be off my head too, but I just hope that all will go really well. Presumably they are only doing tests that have to be done? Hopefully it's a really good sign that Franta's been much better for 2 weeks and he will sail through it all and his mouth will be much better very soon too and the household back to normal. It's just so stressful being a doting mum so just send you big hugs
positive vibes coming from us all for his quick recovery and for you too. My Max is just like Franta's bro in that when I get upset and stressed he hides and gets upset, but ultimately he's ok, as Franta's bro will be too - impossible to hide how you are feeling! x