Annual Leave & MC

Hello, Anyone knows when MC is used up, can employer force us to take AL? Or will it become unpaid leave? Ever since I got pregnant, my immune system has been very low. I’ve gotten stomach flu twice and a sore throat as well. Including my visits to the doctors, I only left 1 day for this year. I still have prenatal check up in end Oct, Nov and Dec. so I need minimum another 3 days. I don’t really want to touch my AL as I plan to use it to go on maternity leave earlier next year.