That itch that went away
for a while is called clomidia, it can make you sterile if it goes untreated , i am not joking, go get a cue tip shoved 5 inches up your pee hole and they do a culture anti biotics no biggie, if treated.
That itch goes away because you lubricated the inside or your penis with your seman, it will come back every once in a while and then it'll go away and so on..it is a sneaky STD.