Yeah, those gelpacs are great.The bag I have is filled with some kind of gel so that it stays pliable even when frozen and it lasts about 4 hours before it gets warm again, it's called COLPAC cold therapy and I have had for literally decades and I keep it in the freezer at all times. I also tie it around my ankle at night to keep it in place.
Did you feel both earthquakes? Around here nobody felt the second one.
Oh, yes, the first one was a 6.4 but the second was a 7.1, a LOT worse than the first and I was lying on the sofa watching TV when it started. Wasn't sure I could get up, it was so strong. My mom's crystal chandelier was swaying like crazy and her little antique lamps were shaking really bad -- I was afraid they'd break but thankfully they didn't and nothing else did, either. Some stuff fell off shelves. No structural damage, and we're all okay, thankfully. Glad you didn't feel it. It was scary.