I was riding a bike continually for 400km and after that there was no problem only my eyes were red but after that I started to masturbate and no simen came, I was confused that time I did 2nd time still no simen but everything except that was ok but at the same night I masturbate again and simen came but I felt extremely dizziness and now this is 4th day still feeling dizzy full day and night, I don't know how to talk anyone about this, please tell me possibly what is happening to me