Hugs and prayers for you and your loved ones. My Mom also thought she had chronic back pain and it wasn't until they found the lung cancer that they found the bone cancer in her spine. I pray it has spread too much and treatment will put her in remission at the least.
I know it is hard when you are so worried about loved ones to take care of yourself but you need to make sure you rest and take care of your bean.
If you need help speak with your ob/gyn. My Mother died when I was 8 months pregnant and my ob gave me meds to help me.
