I'll be the bad guy on this one. You won't get in with a 19. Statistically, it's just not there. Most people below a 24 will be advised to retake even with stellar GPA because it's not worth the time/effort/money/risk to apply with such a low MCAT. What I find most concerning is that you actually went down to a 17 on your second time through. Get the help you need, identify why you are scoring so low (running out of time, not knowing material, unable to apply knowledge), and take the test again when you are scoring consistently higher on the practice tests.
If I were you, I would graduate as planned, and then take a year off to study for the MCAT and maybe work a part-time job. You need to apply when you are the MOST competitive so that you don't have to go through more than one cycle of applications (one cycle is hell enough!) This isn't a sprint; it's a marathon. There is no reason to feel so rushed to get into medical school. It isn't going anywhere and will still be here when you are ready to apply.
Also, scratch PA school off of your list unless you have extensive experience in healthcare as like an EMT or a Nurse or something. I browsed some PA forums and the general idea is that PA school accepts people who are career changers (EMT/RN/etc) much much much more than someone fresh out of college. Not saying it's impossible, but it's unlikely. They like to see people with thousands of healthcare hours. Good luck