I'm A 47 Year Old Female And I'm Healthy And

I'm a 47 year old female and I'm healthy and normal weight. I exercise about 2 times a week most of the time. I've had a weird pain in my left thigh that feels like it's deep in my leg. In addition the skin on the outside is very sensitive to the touch or cold. The pain started about three weeks ago and stays for a day or two then goes away for a day or two then comes back.