Medical ends of sex and whatnot

So I'm his first and only and he's my first and only... I know he and I are both clean and won't spread anything to each other, but are there specific things I should do medically after sex... Because the way I see it its just like ok we had sex we used protection and thats all there is to it but a friend of mine was talking all these gyno things and all the check ups... I'm not a fan of the doctor or health care business for personal reason so if it's not necessary id