Okay... the quick answer is that you're not really ready to submit a solid application for MD until you can get that science GPA up. Your BCP GPA is 3.29, so that is promising to me, but only if you have done some solid networking with admissions staff around your state and SNMA chapters in those schools. If you are intent on getting an MD, 510+ is the target. But I would not apply without clinical hours or experience; there are too many good students, even those from URiM, 1G backgrounds who have at least done their clinical hours.
Now, working as a caregiver in an employed manner working with the elderly could be considered clinical. Who supervised/trained you? EMT also can count towards clinical hours, especially if you were a community EMT (not campus-based... having weird issues with faculty on this).