I've had sex two times this week, monday and Tuesday. On Tuesday I attempted to hold back my orgasm and ended up not passing any semen. My penis still got soft so I did orgasm. I didn't go to the bathroom until noon the next day when I noticed my underwear felt wet. After urinating I released several drools of a see-therough gooey fluid, when wiping it it seemed to have a yellow hue. Could this be an std or a cleansing? Haven't been sexually active for six months before monday.