OK, if it were me, after reading those links Meg shared, I would stop pumping and just nurse your baby as often as he requests. It sounds like you were doing a really good job prior to all of this, too. It could be that your baby is hitting a growth spurt and needs to just nurse more often. This is all good stuff for me to read, too, because my babies are similarly aged (16 wks) and I'm having some similar struggles right now. Anyway, please consider stopping pumping. I don't think it could be doing you any good if you just took that time and nursed your baby and stayed happier and got a little extra rest and all of that. It sounds like you're doing great, working hard and bottles and pumping are not what you need if baby is nursing well anyway. Hang in there and welcome to the LLL forums!