Did you have overs?
I am getting overs, but my mum had unders and she told me if you have overs they retain the cold more than the rest of your body, eg in winter, or say in summer when you get out of the pool, your breasts will stay cold for a while longer than the rest of you? haha…
Do not know how true this is, and sorry if it’s not relevant, you just made me remember this!!! 
It’s great that you are feeling better though to not need to pain killers. I am hoping to go back to work after 6 days, so hopefully I will be somewhat similiar!