>>13799848Was this after an extended period of nofap? If you don't empty frequently, your semen will begin to go stale and will start to decompose. That yellow color you noticed was a sign of your semen going bad. But the next time you ejaculate you will notice the color will go back to normal from fresh semen as long as you don't wait too long. This is why nofap is associated with an increased risk of cancer as the free radicals caused by cum going stale during the decomposition process causes oxidative stress which wreaks havoc on the body including the DNA leading to oncogenic mutations.