I'm having muscle pains when I turn/twist my trunk in certain ways. It's the muscles on the right side of the waist area, so maybe it's the oblique muscles as far as some anatomy pictures show. I don't know when or how I injured it, must be from swimming backstroke or freestyle, but it's after 4-5 days of no-swimming that I'm having this pain when I rotate my torso like when right arm is in recovery movement; it's like a sudden spasm ("Ouch!") when my body rotates and passes that position (after passing it, no pain). It also hurts when I bend toward the left side, stretching the right side. No pain otherwise (seems...). It will definitely affect the possibility of my swimming freestyle or backstroke in a few days which I've been looking forward to.
Anyone had similar experience? How to recovery soon?