Well, the pain of childbirth goes on for hours, starting with bursts of mild pain relatively far apart and then progressing to bursts of nauseating, agonizing pain every minute or so, over and over, well over 14 times (see pathfinder’s comment above).
Of course a repeated annoying thing still counts as one thing. So if he SQUEAKS HIS GOLDARNED sneakers on the kitchen floor five times in one day it still counts as only one thing.
Either that microdosing or it’s just a big year for mice. The population level of mice can fluctuate wildly depending on weather and food.