Honestly, to get into an established DO school, you just need to be 65% percentile on MCAT with that GPA. For someone who has a 3.7 GPA, it isn't really a big problem. You're already top 20% of your class who are all pre-meds. Even with a 3.7, you just need to score probably at least 60th percentile to get into DO school, which is totally doable without much studying for someone who has taken all the pre-reqs and got high grades.
If you're scoring that low on the MCAT, you should re-evaluate your "calling," or your school is way too easy. Not trying to be offensive here.
It's bad advice to tell someone to go to BS/DO program if they require a minimum 3.7 GPA. Even my BA/MD program requires a minimum 3.5 GPA.
http://hpo.rutgers.edu/special-programs/ba-md-rwj