DS 5 months has started refusing my left side for some feeds. I'll feed on the right, have a burp and breather and then try the left and he'll fuss and not want it so I assume he's not hungry. Then he'll fuss that he's hungry so I'll try again and he'll refuse again but if I try the right side he'll latch and eat again. Any ideas why? He's not doing it every feed and if I start with the left he'll have it. Could it be teeth bothering him? Or do I not have as much on that side? My right side does have a stronger flow than the left and I can usually pump more out of it as well.