Today around 3 pm, I experienced an odd hurt underneath my left breast bone, which then moved underneath the right breast bone. It was more of a dull sensation but definitely something I d never experienced before. Nothing else happened; only the discomfort which lasted about three minutes. About three hours later, there were like shooting pains in back, first on the left, then the same symptoms moved to the right side of my back. It lasted about two minutes and went away. It is now 11:45 pm and I ve felt fine since the brief back pain earlier. I wIll note that I am taking three capsules nightly of Zejula for ovarian cancer. I ve been taking it only since March 9th so I don t know if what happened today is in any way related. Before the back pain, I was outside helping the pool guy who was replacing the pump. I was bending over about ten minutes while holding the bad pump in place while the pool guy was trying to disassemble it because a very large screw was stripped. The back pain started almost as soon as I walked in he house.