Hi Since Last Week I Had Gone To Labor Ward

Hi since last week i had gone to labor ward twice due to maroonish discharge. Doc had checked everything was normal.. baby normal too.. he said maybe due to infection. He prescribed flagystation for 10 nights. Had inserted for 4 nights now.. juat whitish discharge past few days but this morning noticed maroonish discharge again. Should i finish the medicine first or call labor ward again? I am at 31 weeks