do I need to see a doctor?

My throat has been hurting and it's hard for me to swallow. I don't think it's strep throat because I got my tonsils out when I was 2 and I haven't had strep since. Also there is nothing else wrong, I just can't swallow or eat without it hurting. And it still hurts even if I drink a lot of water. I don't have any other symptoms but It's been hurting for about 3 days. What could it be?