From memory, the story wasn't completed. It was a chapter story and it was posted on a Single Spark. I can't remember the number of chapters, sorry. It was written in third person. Kagome willingly mated Sesshomaru after he took her to his place (might have been a palace???) in the present era but as soon as they finished, she fell asleep and he returned her to the well house. She's pregnant from this mating. When she returns to the past, the Sesshomaru there loses control at times and his beast takes over and mates with Kagome several times - as his beast knows she is carrying his pup - none of these matings are forced.
I wish I could remember more