Hello Dr. I am 28yo male,midweight and height. I have this problem ,can you please read this and tell me your diagnose ? I have had extra white foamy saliva in my mouth, its just appears there.It all started about a week ago,also makes me burp if i swallow it,but not burping..I have been using nosedrops before that and havent been eating healthy,maybe that caused it.There are no other sympthoms I think,no coughing or anything.Thank you very much.