Unpleasantness 

Any feeling such as fear, jealousy, possessiveness, annoyance, dislike, hate, or wanting to kill, etc. While pleasantness being all feelings like happy, joyful, fun, peaceful, calm.

I have an allergy for unpleasantness.

Unpleasantness by DenverE March 8, 2014

bedroom unpleasantness 

Sexual intercourse.

Roger: "Henrietta, I must insist, if we are to propagate the family line, you're just going to have to jolly well buck up, lie back and think of England."
Henrietta: "Oh, Roger, I thought you'd never ask! Let's head upstairs for some bedroom unpleasantness forthwith"

bedroom unpleasantness by G.P. The Guinea Pig May 7, 2016