Pain in throat that comes and goes

I have a pain in the back of my throat on mainly the left side that comes and goes. It last about a minute and feels like a sharp throbbing pain. It's been like this for a few months now. I've been to the doctor for others things and had them check my throat at the same time, and both times they said nothing was wrong. I go for hours without feeling it, and then suddenly it comes back. Does anyone have any idea what this could be? I've also been getting a few more headaches than what I normally would. I just really don't think this pain is normal at all.. It feels nothing like a sore throat