Your laryngoscopy, they may sedate or put you to sleep as well. When they did one for me, they put me to sleep and took 5 biopsies. I hope you get the info asap and don't have to wait too much longer. If they got biopsies, they should have results before the 2 weeks are up.
As for the thyroid, sometimes if they are cancerous/infected/hypo or hyper, they act funny with the dyes, so that's understandable why they want to wait to see.
I hope whatever this is, they get you answers asap!