Hello, I am a 49 yr old male 5 8 150lbs,who has had an increased saliva problem for about 10 months.At first, it was clear fluid, but now it is very foamy and full of air bubbles.It started after I had oral sex with a woman who told me she had genital herpes,but it was in a malignant stage at the time;I ve noticed that when I drink beer, it seems to increase at a faster rate. Could this be some sort of yeast infection?