I have chlamydia, taken a big pill. Why do I have small bumps on my soft palate in my mouth and white patches on my tongue? (never performed oral sex)

Oral imbalance. It sounds as if you may have a yeast infection in your mouth the bacterial balance is off get it checked.
Yeast. Most likely you have a yeast infection in your mouth. If you have any conditions or medications that decrease your immune systems ability to function correctly, your bodies ability to control yeast organisms may be compromised, and result in overgrowth of yeast (candidiasis) in the mouth or other mucous membranes such as the vagina.