Ha. Yeah.
That and pain could start one place but we feel it in another.
Good Ole referred pain

I've been suspecting costochondritis too but that might only be the upper parts of the rib cage,
I checked a muscle diagram of the chest and they all start to flare up at time 😓

I gets aches in my lower abdominal area, uterus, bladder, intestines and stomach is tender. Not all the time. I’ve had all kinds of tests and found nothing wrong.

I think sometimes its my muscles and sometimes the stomach and liver.

Left and right sides here