How long should i make on a woman so i can be certain i totally ejaculated in her so she gets pregnant ?

You should plan your encounter during the time of the month when she is ovulating. Regarding how much time, it all depends on you... some men take more time, some take less. The most important thing is that you finish what you've started.

You should be able to feel it when you ejaculate. To maker her pregnant means a mutual desire to be, and knowing her fertile period.

If the women wants to become pregnant with your child than a program exits which will monitor her ovulation cycle for the best time for insemination. Your ejaculation should be normal and have your sperm count taken beforehand.