Urethra Ejaculation Camera Video What Percentage Of Sperm Is Left Over In The Urethra After An Ejaculation?

What percentage of sperm is left over in the urethra after an ejaculation? - urethra ejaculation camera video

ie on the basis of ejaculation 100 million sperm, for example. I can not find anything about this and am curious. The reason I ask, I ask myself what is the probability of pregnancy during unprotected sex again after a previous ejaculation is about 20 minutes in advance, without urinating environment (not c * m in my first time and not in the mc * throughout the second time). This happened on the day of ovulation. I know it can happen, but what are the chances? Thank you for your comments.

** I re-posted this question because it seems only one answer and the answer does not understand what my question was not used **