After month long sore throat w red bumps back of throat I got a mouth sore inside of my cheek. It's dark red w red spots. All happend after sex w man.

Viral or Bacterial. There are many causes of sore throat. When sore and inflamed, viral and bacterial causes are often suspected. Acid reflux is possible as well. Sores in the mouth (canker sores) are caused by viral infections.