pumping sadness

Brianna

So baby girl has been breastfeeding since she was born.. I have a clogged duct and was told pumping in between feeds would help and also help produce more milk (which hasn’t been a problem). So I’ve tried to pump twice now and when I pump I get this absolute feeling of sadness and can’t stop crying. But when I’m breastfeeding her I’m okay. I’m happy and love cuddling her. Why do I get so sad when I pump?