Sperm

my opinion is I dont think so as long as he finally ejaculates inside u and theres sperm inside its good enough. If he thinks ur vagina is too try u can try sperm friendly lub like preseed or vegetable oil.

It shouldn't be affecting you getting pregnant, but, have you tried different positions? Sometimes different positions work better for different men. For some reason, a lot of guys seem to be able to ejaculate very quickly doggie style.. maybe try that? but I don't think it is affecting your ttc, as long as the sperm ends up in you!