Pregnant and Breastfeeding *Pain While Nursing*

I’m 15 weeks pregnant and still nursing my son (he will be 2 in March). I have had NO supply change, my son has not changed the amount he is nursing and I don’t expect him to. BUT my left breast (nipple) is incredibly painful when he latches.

This breast happens to be the one that produces WAY less (despite had being nursed on equally for the first year) and the pain at first latch makes me cringe every time! Does anyone have any suggestions? At this point I have him nurse on it at a minimum and only when to switch sides.

Any advice would be much appreciated!