I wouldnt worry just yet...but have you experienced any lesions in your mouth or on your tonsils?
also...have you had your thyroid checked?
Don't start worrying about the worst possible thing, it is just going to make you notice your symptoms even more. Anxiety can cause throat symptoms to be worse than they actually are. Do you have post nasal drip? That can cause sore throats. I think you should drink more water and herbal teas, avoid sugar as much as possible and take vitamin c, get plenty of sunshine(vit D), and maybe a good herbal remedy to build up your immune system. A few years ago I thought I had throat cancer because of some swallowing issues I was dealing with. I went to the ENT and she told me that LOTS of people worry needlessly about throat cancer and their worrying just makes things worse. You are fine and unless you are having weight loss, night sweats and really bad fatigue, I would not think about throat cancer. Good luck.