Feel right as rain all morning/afternoon. I take the dog for a 45 or so minute walk and I'm getting a steady, dull ache through the left side of my chest. It wouldn't be scary if I'd had anything to eat or drink on the walk, as I know I get heartburn quite a bit. But just random pains through the chest due to a 45 minute walk is a bit f***ing worrying.

Doesn't feel low enough to be a stitch.