Could be this one.
Bound To Love By Blood » by brandypandyxxx reviews
Sesshomaru has a son, of pure blood. No mother. When the demon who is supposed to nurse his pup dies he goes looking for the miko! Everyone is shock, what is Kagome to do with a baby. Why is Sessshoamru watching her, will his pup bring them 2g?
Rated: M - English - Romance/Suspense - Chapters: 29 - Words: 32,143 - Reviews: 1301 - Updated: 3-26-10 - Published: 5-29-09 - Sesshomaru & Kagome - Complete
www.fanfiction.net/s/5097375/1/Bound_To_Love_By_Blood
Hope that helps!