DAT scores are pretty good. The 15 hurts, but its in the QR section which is really the least important, so I would say your DAT scores are fine. Your main issue is your overall GPA. Its on the low end for getting in, but you have a good science GPA so that counters it a bit. Unfortunately I would say you have a pretty small chance of getting in this year assuming your application materials are all in. If all of your materials including your DAT score were in earlier this year your chance would be a bit better, but a late application with a GPA in the low 3's puts you at a big disadvantage. Assuming you don't get in this cycle, work hard to bring up your GPA this semester and next, do some volunteering/shadowing, and get your application in early next summer (June) and you will have a decent shot. Thats probably your best bet, but who knows - maybe you'll luck out and get some interviews/acceptances this time around. Good luck.