BC and prenatals

Amy • Stay at home mom. Just went back to work part time. beautiful girls. 9 and 2
Hi. Husband and I were ttc. Now I'm going on the pill. I've been taking prenatals. This might be on them short term. I enjoy taking the vitamins and feeling better (besides my hair and nails) I know they are no longer nesassary. Do I have to stop them?