sudden low breastmilk production and migraines

Hana Lola
It started 3 days ago. My breast milk drastically reduced and I started getting daily migraines that made me want to rip my brain out with my own fingers. I have resulted to using formula which I do not like much at all. Anyone have advice, info, or knowledge pertaining to this? He just seems so hungry and is growing so fast; maybe I just can't keep up? 6 weeks PP. iron levels are good.