i've always struggled with inflamed gums, but i've been sick with an unknown illness for 4+ months. I have several symptoms including sore throat and post nasal drip. my gums have also been swollen on and off, and occasionally develop these red sores near my teeth, sometimes on the roof of my mouth. they usually go away within a couple of days, but these are the worst i've had and are very painful when eating food/brushing my teeth. i noticed some white discoloration on the area as well. i only mention the other symptoms because i'm concerned it could be an ongoing bacterial/viral infection. any advice or guidance would be nice.