What is this red patch on the roof of my mouth?

I'm sitting here on a Friday night paranoid that I might have oral cancer, but I'm hoping someone with a clearer head might know better and be able to help. About 6 weeks ago, I was diagnosed with bronchitis and went on antibiotics. All along I have had a sore throat off and on. The doctor checked it a couple of times and found nothing significant. About 4 weeks ago, my sore throat just became sore on the right side. It has stayed like that ever since. Sometimes it's sore and other times, just a minor nuisance. Tonight I was looking back there with a flashlight and I see now there's a patch of tiny red dots on the roof of my mouth. It looks like a red patch composed of these little red dots. The right side of my throat looks a bit red to me. I'm still coughing, which I'm told can linger with bronchitis and I wondered if that could make my throat sore, too. But then I googled it and found stuff about throat cancer. I'm 35 and don't smoke (quit 11 years ago) and hardly ever drink. Oddly enough, tonight, my throat doesn't hurt, but the red patch on the roof of my mouth is kind of freaking me out. I don't often get sick and I have never had a cough last this long or a sore throat, so this is really baffling. Just a side note, I operate a home daycare, so I am exposed to lots of germs. Also, I am going to see my family doctor on Tuesday. Is this likely nothing serious?