Did you ever swallowed your own cum?
I know it's hard for guys to admit it, but when your hormones are rushing in during the act of masturbation this is not an unusual behavior during adolescence. Guys usually feel discouraged after cumming or disgusted after doing it. Many end up just cumming on their own faces and then feel grossed out. Be straightforward about it, your not alone, like i said it's not unusual, especially during adolescence.