I recently had a bbl/ lipo sculpture Feb 24th, 2017. About 3 days after my procedure, as I sat on a foam piece to use the restroom, I started getting this sharp, sudden, shooting pain on my upper side/ back of my left thigh (underneath my butt cheek) and it only comes when I apply certain amounts of pressure, whether it'd be using my left leg to get up first/ squating or when I sit on it. It went away for about a month and I recently developed it again. What could this be?