Hi, Janemarie91,
Sorry you're having such a difficult time right now. I know how you feel about being lost about what to do or how to get help.
I have osteoporosis in my hip, although it's not severe. My PCP has been trying to get me on drugs for years but I don't want to go that route and I really don't think I need to. I've recently started seeing a medical nutritionist named Susan E. Brown, who focuses on diet and exercise to halt/reverse osteoporosis and only resorts to meds as a last resort. She's had a lot of success. You might be interested in her book "Better Bones, Better Body" or her web site, betterbones.com. Also, R. Keith McCormick, a chiropractor who also specializes in bone health has had a lot of success with his patients, too. He has a book called "The Whole-Body Approach to Osteoporosis". While both of these practitioners feel medications may be warranted in some cases, they feel it's important to determine whether there are secondary causes (like bonebabe suggested) that the medications aren't treating. So maybe your endocrinologist uses the same approach which in my opinion might really help you out.
Also, there was a really promising study of how 12 specific yoga poses helped people with osteoporosis dramatically build bone density. If you're interested, you can find it on sciatica.org. Obviously, you'd have to consult your doctor about whether you could do these poses since you're spine is weak but they do have modified versions of each exercise that might work for you.
Good luck!