Bad pump or bad boobs?

Kez

I was purely expressing for my little one as he was so fussy and wouldnt latch. But now i cant do it anymore. Feels like the machine is literally gonna rip my nipples off any minute (already tore one part of my areola (spelling?)). Do you think that it's my machine or is it something that can happen from regular expressing? If it may be the pump, anyone have a recommended one? Thanks...