It's for sure cancer. We are all doctors on here. If you want we can perform online surgeries and oncology services for a nominal fee as well. You seeing the point through the sarcasm? Don't go on the Internet looking for an easy answer to calm your fears. See a doctor. Early detection of anything is the best treatment
There are various illnesses and conditions that can cause this sort of a problem. However, the most commonly encountered are Tonsil stones, otherwise known as tonsilloliths, and thyroid problems. Tonsil stones are formed when trapped debris hardens or calcifies in the tonsils. Have a doctor, an ENT specialist to be specific, take a look at you for proper diagnosis and treatment.
I don't think it would cause a feeling, because they are cells, just as others, or maybe it does in the throat. So, why not see a doctor? The sooner you begin treating cancer, God forbid (Do you believe in God?), the higher the chances are that you get rid of it.
It could be a variety of things, from throat cancer to swollen nodules... cancer being least likely (unless you chain smoke) and a simple infection/swollenness being the most common. But guess what? There's this guy called a "doctor" that can help you out.