If I were in your shoes, I would retake it. Being as a 21 DAT score applicant, it was also hard for me to get in. You should try everything you can to increase your chances of getting in. I first took it and got a 19, and I got a 21 (You can look up my DAT breakdown if you are interested). Good luck! If you get in this cycle, that's great, but even if not, do NOT give up. And APPLY EARLY JUNE.