They send the whole day doing it

They already had all they needed in the cave for now and didn't need to leave. So they decide for the whole day they would do nothing but fucking and trying to make sure Kimdile was pregnant with their first batch of goblin babies. They did it at least once in every room. The whole cave you could hear nothing but moaning and grunting. Then the night came and they had passed out from all the sex.

The next day they would check if she was pregnant. Goblin pregnancies are very fast and only need a week or so.