I Have Been Having A Click Type Sound Coming From

I have been having a click type sound coming from my left hip or possibly my lower back area. Still unsure since I am not having pain at this time. I sit a lot for work, but also excersise. I used to run and cycle, but have not ran in some time due to being hard on the knees. I am 52 y/o and 178 lbs. 5'7" tall. Any thoughts of where to start would be appreciated.