I guess by semens you are
meaning your urine contains sperms.....this happens when there is "retrograde ejaculation" at sex.....so instead of discharging sperm containing semen from urethra to outside the sperms are diverted into urine bag.....for this you may need to consult a urologist.....
Answered2016-10-11 17:32:01
Let others know if this answer was helpful