prettyflower, fosamax was a decent choice at 55. That is when most of us start to lose the most estrogen and consequently the most bone. Even though your dxa shows -2.7, the fosamax probably saved you from greater bone loss.
I don't think of Prolia as a good choice. Partly because of the storied history of the drug, but mainly because it preserves older bone, essentially the same working mechanism as Fosamax, thought with different mechanism of action.
It isn't that -2.7 is severe osteoporosis. But consider that the bone you have is bisphosphonate-bone. Bone that has been preserved with all its little cracks and fissures that the the medication has prevented from self-repair.
You are living in a time when there are amazing drugs available for protection from fracture. And your primary has both made you aware and given you interum protection.
You could get a frax score, have another dexa, double up on your supplements, take alternate supplements, place an estrodial patch, and exercise.
At your level I'd "suggest" Forteo. I'd be happy if an overeager dxa (dxa over estimates bone loss in small bones) placed me in a position where I could get a prescription for this medication. I'd jump sooner than later because those vertebral fractures, unlike any other fracture, never heal into their original position.
Some people never fracture.
My order of choice would be Forteo, Tymlos, Evenity.
best wishes