I recently switched from breastfeeding my 12 week old to pumping because his latch is so poor. I was already combination feeding at this point so only pumped four times in the first 24 hours of my new plan. I must not have pumped enough or something because suddenly I noticed one breast was hard swollen and full of painful lumps which I'm assuming are clogged ducts. I've tried hot compresses, lots of massage and more pumping to unclog them but no joy. I'm really worried about it turning into full blown mastitis - had that before, felt utterly horrendous! What else can I try to unblock multiple blocked ducts in one breast??!