The past few days my breasts have felt tender at random times in the day. This evening they were really aching, similar to a overfull feeling when breastfeeding. I massaged from the top downwards to try and relieve the pain and milk came out! I have a 2.5yo and haven't breastfed for over a year. 
My milk dried up pretty quickly after stopping and I've never been able to produce milk since. Does this sound normal? Should I get it checked out? The pain is a concern but there's no lumps , hot patches and I'm otherwise healthy.
Just a bit confused. Any advice appreciated!