I've vaginally delivered a 9 pounder and an 11 pounder with minimal tearing and minimal damage. I still have sensation there, still enjoy sex, and as a side note, I did my kegels so I can also still hold my pee (even pregnant with #3).
Some women have more traumatic experiences with more tearing and a longer recovery though.

Factor V Leiden Homozygous, Advanced Maternal Age
TTC #1, 5 yrs, PCOS, Femera + Ovidrel.
IUI#3 BFP, DD 5/31/2012

TTC #2, 2 yrs, PCOS, Femera+Ovidrel
IUI#2 BFP!
Re: Vaginal Birth