expression
some days; several days
Refers to an unspecified number of days, typically a small number. Often used when the exact count is unknown or not important.
See also: 幾日か
何日か休みを取って旅行に行きたい。
I want to take a few days off and go on a trip.
彼は何日か前から風邪をひいている。
He has had a cold for a few days.