I had pain in same place with some nausea…was at my osteopath/MD…(.I go 2x monthly for back and neck)…told him about the pain, so he gave me a manual exam and told me to immediately call my PCP and request imaging asap…she went into high gear and put together a team of docs as well as several types of imaging…that DO and my PCP were life-saving ! I had a large aggressive colon cancer, successfully treated by immunotherapy and surgery, and so far am cancer-free. Timing !! My case was presented at national osteopathic conferences to encourage DOs to treat the whole patient, not just their back or neck, etc…hope it helps others… hope you get checked out ASAP ! And feel much much better soon !