I've found a sore lump on one of my lower ribs. It doesn't hurt to breath so I don't think I've broken anything. It's not a visible lump but you can definitely feel it.

Is this a postpartum thing from have the ribcage stretched or something else?

Anybody else had this?

Also, when you breastfeed the milkducts get lumpy and hard so how do you do the breast checks to make sure their healthy and nothing to worry about?