What Causes Pain On Left Side Of Rib Cage?

Question : I hope that I can at least get an answer that can, at the very least, direct me to an appropriate md/specialty.
I often get a feeling that is almost under the bottom of my left rib cage that feels as though something is getting "caught". excruciating pain, but, just for maybe 30 seconds. It occurs, for example, when I am on a bike and lift my left leg up onto the handle bars, or, try to stretch my leg behind me. I have also gotten this sensation/pain, when sitting and turning my torso. Until recently this has been confined to my left side. The other day however, I had this same, sensation on my lower right abdomen. I have had a hysterectomy, and my gall bladder removed. I tend to let things "go" for too long, and don't want to with this. My gall bladder was pretty infected and I had to have the subsequent procedure to remove stones from my pancreas and small intestine (entrance?) as things had moved into my biliary system. What do you think it could be and what kind of md should I seek?

It is only with a particular movement, lifting up left leg.....twisting torso

I had it OCCASIONALLY, for about a year, but, more frequently in the last 2 months

No cramping, no coughing, no scarring.

My surgeries were about 6+ years ago

I had a tummy tuck 4 years ago

I do "soul cycle" spinning x4/week and am never winded, nor experience chest pain. Sometimes tho' when I go to stretch, lift my left leg up on bike handle bars I get this weird pain. Yesterday I got it while standing and doing a ham string stretch
I am very active 54 year old, have had 5 child(vag) who range in age from 31-13.