The key is to be careful about bending over or curling/twisting the spine. You don't want to do crunches, for example. You don't want, under any circumstances, to bend at the waist and pick up something heavy. Beyond that, it's ok to add weight gradually. Just be extra careful with movements involving the spine.

If you haven't been on any medication yet, then Forteo/Tymlos/Evenity are your best bets. You're already doing strength training, and I hope you are paying attention to vitamin D3 and K2. If the doctor hasn't done so yet, check your hormone levels.