Medicine is one way to go, but read what Dr. Keith McCormick has to say about diet and your bones. Acid reflex could be your body having a hard time with the calcium your taking.
My scan was -3.1, in the spine and my Dr. wanted me to start meds, I'm a 65 year old woman. I power walk 2-3 miles, three times a week, I started jumping lightly 10 times a day landing on my heals (2x's a day;) started taking zen basil seeds, I eat mostly a veg/vegan diet, I don't smoke and occasionally have a drink. One year after doing the above I had another scan and my number dropped to -2.8, I am going to continue with my bone plan and add a gym membership for lifting weights with a trainer to get started on the right foot. I'm treating my bone density not as a disease, but as a product of getting older and working to slow it down as much as possible.
Before going on meds. read up about the med. your Dr. wants to put you on.

I would encourage you to read up on patient reviews of reclast. Your DEXA results are really not that bad, and
recast scared me when I read all the negative comments.
After I completed Evenity I researched Prolia and Recast, and decided to discontinue any treatment. My DEXA was -3.2 went to -3.0 in right femur, -2.9 went to
negative 2.8 in my left femur and spine went from -2.1 to -1.5 in my spine. I was disappointed in the results in my hips, where I actually have osteoporosis, but got the best results. in my spine, where I did not. I didn't feel like I got a good enough improvement in my hips to warrant continued medications, which all have awful side effects.