Hi
First, I hope you manage to get pregnant soon and have a long and boring pregnancy which will end with a baby for you to love and raise.
Other than that, most of the ejaculation is not in fact sperm cells, but a substance that keeps it all together and allows the sperm to reach the uterus. In other words, most of the contents should come out, and it not necessarily effects the quality and quantity of the sperm cells.
However, if you have been trying for quite a while, it might be worth your while to check both of you for sperm quality and the myriad of problems females might have when having trouble getting pregnant.
Good luck!