Thyroid cancer?

I was diagnosed with Hypothyroidism at 13, I'm now 22. I was very inconsistent with taking my medication, and stopped taking it altogether pretty much in 2016/2017. My boyfriend and I have been TTC for the past two years and I recently got back on medication and my TSH is down to 2.09 as of August 13.

My concerns are I've been having an increasingly hard time swallowing - water, food, pills. I literally choke taking my antibiotics and they get stuck in my throat to where I can't cough, talk, or get it out myself. My body involuntarily makes me throw up water, and sometimes actual vomit to get it out. I've thought I was going to die multiple times. I also have some occasional neck pain, constant headaches, and consistent diarrhea. My mom is concerned that it could possibly be thyroid cancer? My mom's uncle had throat cancer, and different types of skin cancer runs in my family. Idk anything about it but it's worrying me. I have to wait until my doctor is back in on Monday to call her, and I don't have insurance.