I have no idea ,none, if this will be helpful, my sister suffered with pain on her left side as you describe. After MRI, CT, x-rays, blood work etc no relief. She had to have her esophagus stretched, the DR decided to look around a bit, when he did, he discovered something called a Gist Tumor, these are fairly uncommon. Unfortunatly hers is cancerous, good news is Ct shows nothing has spread to other organs. I know this may sound strange but these types of tumors are hard to find. The Dr was stunned, after all she had had problems for over 2 years. Please remember this is just a thought, it stunned all of us too. I do not meant to scare anyone just know I wish you and your partner well.