If this is your first MCAT, then that's pretty good. You should however take it again but this time concentrate on the section that stumped you. From the way you wrote the scores, it seems to be the Biological Science section. The organic chemistry has a way of stumping people, I can sympathize and empathize with you.
Looking at your overall profile and the fact that you plan to apply to an osteopathic medical school (you've posted in the pre-osteopathic section), I think you have a pretty good shot right now of getting an interview and getting accepted. Give the osteopathic medical schools a shot.
However, if you plan to apply to an allopathic school, the 6 is just not going to fly. Eventhough you have a good overall GPA, you should know that med schools also look at your science GPA. What is your science GPA?
If your MCAT score is a reflection of how you did in what I'm assuming are the Bio courses at your college then you're going to have some trouble with the allopathic school and possibly even the osteopathic schools too. In order to be considered for admission to some schools (allopathic and osteopathic), you can not have a grade below a "C" (a 2.0 on a 4.0 scale)in any of the required courses. These include: Biology, General Chemistry, Organic Chemistry, Physics, and English (sometimes even Calculus, Behavioral Science, and foreign languages). If you have a "C" or better (preferably better) in each of the required courses then you're in good shape GPA wise.