I woke up this morning, i peed, then i went to school, peed another time, when i got back home, i peed too, but just after that, when i squeezed my penis to wipe pee, white opaqe liquid came out, although i have masturbated this morning, i have always protected myself except for blow jobs, i have had 3 partners. Could it be a sexually transmitted infection? Chlamydia ? thanks !