Is the terconazole cream absorb in your vagina or is it suppose to all come out?

After vaginal administration of terconazole nearly 70% (range of 64-76%) remains in the vaginal area during retention period of 16 hours with maximum blood concentrations occurring 5-10 hours after application. The active ingredient is absorbed via vaginal wall.

Terconazole vaginal cream is used to treat vaginal Candida (yeast) infections. The active ingredient in the cream is absorbed through the vaginal mucosa. It is best used at night, just before bedtime to avoid any messy leakage. If you use the cream during the day you are likely to get leakage. This shouldn't matter too much as a good portion of the cream will still be absorbed from the vagina but for best results use just before bed.
https://www.drugs.com/mtm/terconazole-vaginal.html