I had this… But instead of moving about I decided to sit in bed for longer suffering. Once I got up and about the pain I had initially started to go away. It also feels a lot tighter when you first get up.
It doesn’t last long, don’t worry. I would say a couple of weeks – just try and not hunch too much even if it does feel heavy cos it will just ruin your back. I had morning boob and it wasn’t too bad at all 🙂 xx