Fiancé had cancer as a kid and was told...

Cortnie
My fiance was told when he was around 25 that it was unlikely that he'd ever be able to conceive because one of his tubes was fried during chemo leaving him unable to produce sperm. He still squirts the juice but they told him there's no baby batter. Has anyone experienced this or does anyone have any advice? I know doctors can be wrong, so my hopes are still up.