I also can't take NSAIDs which is the biggest bummer when it comes to Costo pain. I've had it for about
10 months now and have given up all hope that it is ever going away. I have to be very careful as to what movements I do to keep from the really horrible pain.
I find that ice helps me more than heat when it comes to Costo. I think that since it's inflammation the ice helps calm it down a bit. Just try to take it easy and I also find that by sitting in somewhat of an upright position helps. I would wake up in the middle of the night with severe pain from rolling over. I basically built a fort of pillows around me to stop from rolling
Good luck and I hope the pain continues to subside!