
From what I gather, the current thinking is that antibiotics aren't a first-line treatment for non-infective mastitis (which is what this sounds like.) What are the LLL leaders like in your area? Any LCs?
I would be inclined to suggest that you go back to bed, taking 3L of water with you, your favourite TV programmes on DVD, books, whatever makes you happy- and stay there until this growth spurt is over. Do not wear a bra, and I'd consider jumping in a bathtub, combing your boobs and then nursing him in there.
Love to your other half for supporting you through this as well- I know breastfeeding difficulties can be really tough for men because they can see a "fix"- grabbing a bottle of ABM- and it's hard to stay focussed on the long-term plan when someone you love is hurting. We're here if he wants to vent, or wants advice too, y'know?