I know this is the last thing anyone wants to hear when they so want to go to med school and have tried three times etc -- so if you want, just tuck it in the back of your mind for later.
Learning medicine is awesome, and if it's what you want, it's not to be missed. I am LOVING medical school, even though the workload is crazy. I am so happy to study what I love, and be working towards caring for patients.
I used to hate reading this statement too, but please don't discount osteopathy or NP or PA. If you want an MD, work as hard as you can to get in. BUT, if it doesn't seem like it's going to work out, if you had to choose either allopathic med school or NOT learning medicine and caring for patients, I would advocate pursing whatever other path is going to get you to be be a practioner, if you want it. It's such a priviledge.
As you worked in oncology clinical research, I'm assume you were exposed to NPs. I also did oncology clinical research for a while, and thought that was NPs got to do was amazing as well -- much of what doctors do. I actually looked into NP programs before I applied to med school.
I don't know as much about osteopaths and have never worked with PAs, but they both PRACTICE MEDICINE.
I know that these posts to "consider other options" are so discouraging and make some people feel like they're having to choose a "second-rate" option. So I would understand if you dismiss it. But if allopathy doesn't work out, maybe sometime think about it, see if you do want to practice medicine, maybe shadow some osteopaths and PAs and NPs and see what they do and what ways in which you might enjoy or dislike their professions.
Getting into med school was a struggle for me too, and your story resonates with me -- good luck to you and everyone else trying to show adcoms that numbers that you can't change from the past don't always reflect your capability today.