IBS Stress and Health Anxiety

Hello Everyone,
I've suffered from unexplained health symptoms for years. Early childhood trauma, an emotionally abusive church that withheld medical care etc.
My health anxiety comes and goes and typically centers around heart, bowel and nervous system concerns. recently I've had multiple stressors. My mom passed away in a traumatic nursing home incident, I'm faced with job stressors and I am now faced with leaving my stressful but secure job and moving across the country due to my partner getting a job in a different state.
Recently, I've started having spasms and tightness in my chest, particularly under the lower left quadrant closest to the center of my chest.. I've had muscle spasms in various places for years and have seen doctors who tell me it's anxiety. But I made the mistake of googling it and learning about the "MS hug" Now I'm again convinced that I have MS and the problem persists.
The one thing that I have been "diagnosed" with is IBS. I'm wondering if anyone has experienced these types of symptoms related to their IBS. It doesn't "feel" like a bowel or stomach issue but I know sometimes that can be really deceptive because of how the nerves are laid out.
Ugh I'm a mess. I have an appointment with my GP in early March but fully expect she'll just say that it is all in my head as usual.