GPA 3.6
tutored courses: organic I and II and Cell biology
Research in Biochemistry
Volunteered at hospitals
Assistant in lab set up at my university
cum laude, Dean's list honors
my mcat scores are not good, but I just to go in DO.(preferred CCOM)
I only applied to one osteopathic school, so I am not incredibly familiar with their numbers. Here are my two cents:
Let's say you score a 23 to go with your 3.6 and ECs. With that in mind, like others have said, you may have a difficult time getting past the secondary screening process. Someone correct me if I'm wrong, but I think most if not every DO school screens applicants before sending out secondaries (this is not the case at MD schools). Also, we should see your BCPM GPA. That could be a difference maker.
Sidenote, my MCAT score jumped up three or four points from my practice exams. Maybe yours will do the same.
You can get in with your stats, but it would be easier if you presented some unique ECs. What you've listed is pretty standard, actually. Can you find at least one or two activities to set yourself apart--to give yourself a "guy" name in the adcom meetings (i.e., "free clinic" guy, "Latin America mission" guy)?
Lastly, you mention your "MCAT scores are not good, but [you] just want to go in DO." While osteopathic schools do seem to accept lower stats, they also seem to except students with a more wide-range of interests--the "well-rounded student." If you don't score above a 23 on the MCAT this time, perhaps it's a blessing. Take a year to gather a few strong ECs and study for a better MCAT. You'll stand a better chance the next time around.