Hi,
Welcome to HealthcareMagic forum.
At the age of 43, the most common cause of
back pain is related to degenerative changes (
osteoarthritis) and
calcium deficiency. It is usually an association to
menopause. I wonder if you menstrual cycles are normal or are you having other symptoms of menopause.
Though I cannot predict the cause without a clinical examination, my bet would be on one of the 2 conditions.
I suggest you to visit your orthopedic. Careful examination of the spine with multiple X-rays or CT/MRI scans of the back will reveal the true cause and its management.
If the visit to the doctor takes time, you may try over the counter analgesics such as Advil 400mg twice a day after meal briefly for 3-5 days. Rest well and involve in physical exercise to strengthen the back.
Calcium supplements can give you added benefits on the long run.
Hope this helps. If you wish to give me more information, you can post them to me.
Good luck!