I have swollen gums, painful teeth, sore throat, whitish- yellowish stuff on the roof of my mouth, and swollen lymph glands. any idea what it might be?

Could be: Could be any of a number of viral, bacterial, or fungal problems. Please call your dentist for examination.

Pharyngitis: This needs to be examined and a full history obtained before one can make a diagnosis. This could be anything from herpes to diphtheria or infectious mononucleosis or even syphilis. Let a doctor examine you and assess this. Good luck.

Poss fungal: It is possible you may have a fungal infection, i would see your physician asap to get the appropriate tx.