Call your doc, tell them about this pain and find out what they want you to do. There are many things that could be causing your pain and you need to let people who know you and your history know what's going on so you can get the best treatment possible. It may be nothing, but it could be something really important. Don't take chances; call NOW!

Yes, I insisted on a Catscan on my kidney turned to be a collapsed tube that goes to bladder.
Also found my cancer, when the doctor tried to say Menopause, hot flashes. Turned out, it was not Nonhodgins lymphoma. Write down all your symptoms, when your pain started, when it’s worst. Write it down right up to doctors appointment. Then hand the list to him, or you read it. Trust me the more the doctor knows the better he’ll help you. Good Luck 🤞

Check it out. Ask for a scan. It could be nothing but it may be serious. My similar pain turned out to be cancer that moved from my lung to the muscles. It took a long time before my lung specialist took my complaint seriously. Insist that it is investigated

It is really hard to say could be many things. Is your dr aware of it?

Kidney??