Odd pain only induced by 1 thing

[Frutloop59]

I have the oddest pain that is only reproducible by one action - crossing my right leg up onto my left leg/slightly above  the knee, while seated, as I do to change shoes. I have poked, prodded, pushed and examined and nothing abnormal is there. I can't reproduce the pain any other way. There is no bruising, swelling, orthopedic problems or history of any injury. It only happens when I change shoes. I'm a 59 yr old retired nurse with a history of cancer 5 times (breast with 2 recurrences, cervical & lung) and of course, I worry it could be cancer. I feel like my docs will just think I'm crazy if I tell them what's going on now and frankly - I don't want to see anymore specialists or take anymore ct scans for silliness but, the pain is real and intense and has been going on for months. I try to avoid touching it when I take off/put on my shoes but sometimes it's just not possible.