hey this is Dr. M .... and i would like to tell you some cures to your issue it is that you should go to bed a little earlier so that you ain't a crab in the morning and also I think you should go to a doctor a find out what is wrong with your throat but if they don't know the I suggest that you just gargle with razor blades because me Dr. M .... the most best doctor don't know how to cure you . And that i have no clue what to tell you so make sure I'M on your funeral list.
It could be a nodule, thyroid cancer or just sinus issues like you say, or, other issues. However only a doctor can diagnose your situation. If its a thyroid issues doctor can tell by hands on examination first. If doctor feels thyroid then blood test are needed to confirm, plus other test if it goes deeper.
If just sinus, doctor might prescribe something to heal it, faster.
Good Luck.
GL