Yes, multiple biopsies. It just felt like a little bit of pressure. Not anything to get worked up about (I don't mean that in a judgmental or harsh way as it might read, simply for peace for you going in or anyone else in the same position.)
In the end I had to have my thyroid removed due to the size and placement of two of the little buggers. I was not getting enough oxygen and was choking as well at times while eating. Two sat against my windpipe & trachea.
My decision became clear, as before I was content just to continue biopsies, after almost drowning. I am a very strong swimmer, jumped off my sister's boat in nothing but joy and had nothing within a minute.
During the same time period, by coincidence, my endocrinologist had me raise my arms above my head & lower my chin at the same time. I could only get words out on instruction that sounded like the devil and barely at that & was instantly choking. I realized I was probably doing the same position in sleep (the worst of the out of breath times) & of course with the front crawl.
I am writing all this not to scare you but to give you a tool to see, besides the biopsies of course, if any of the modules are affecting you adversely in ways you are not fully realizing. If mine were not, I would have chosen to do regular biopsies. It is a lot more comfortable than your mind is probably thinking.
Best of luck with everything.