Metronidazole question

So I'm on this metronidazole vaginal gel and I have a question. When I do all that I need to do does it just chill in there for the following dose or does my vagina suck it up and nothing is in there when I wake up?

What I do now is shower, lay down, put it in, go to bed, I wake up like three times during the night to pee, then wake up and go about my day Probably a stupid question but I'm kinda confused lol