I've had this issue for years, when I masturbate the traditional way, stroking with my hand, the stimulation of the head causes me to ejaculate a urine like substance. I have an alternative method of masturbation which focuses less on the head, and with that I ejaculate normal semen. I've tried emptying my bladder before hand, but it doesn't change anything. It's not over stimulation because if i use my alternative technique afterwards, it's normal. My previous partner, who was very understanding insisted that she didn't think it was urine.

Any help, suggestions? Should I see a doctor about this?