A couple months ago, i was laying down and rolled over, when i did i got a very strange pain near my hip, it felt like an elastic band snapped. i thought the band on my underwear snapped, but i checked and it hadn't. In the last month, it has happened once a week approx. Sometimes it happens when im just laying still, It feels like an elastic band is breaking inside my body. Sometimes it happens just under my rips on the left side. The pain usually subsides quite quickly and i am easily able to forget about it. Yesterday it happened again, this time the pain lasted a little longer than usual. Once the pain had stopped I had a twitch constantly on my left side, opposite to where your appendix is located. The pain stopped as did the twitching as i was falling asleep. This morning i woke up and had some discomfort where the snap had occured and the twitching continued. My side is still hurting a little but its not unbearable. Im wondering if anyone has any idea what this may be or what may be happening, and if i should be seeking a doctor.