me and my bf got intimate..

so this may be a Tmi, idk but me and my bf were being intimate last night and as I was finishing up giving him oral, he cums in my mouth..the taste literally nasty! I know his eating habits aren't the healthiest but what are some ways to combat that?? what foods to eat, more water, vitamins?? I also feel like that may be stopping me from getting pregnant so if we can fix the taste problem, it should fix the other problem, right?