It's rare a woman can't lactate people often assume they can't lactate because they don't stimulate their nipples or the milk doesn't come in right away so they use formula and don't latch the baby enough so the milk supply doesn't come in good..my milk took five days to come in..that being said I got a cheep even flo single electric pump it did okay but I much preferred the double electric medela pump I used in the hospital ❤️ and when you pump one side the other side will leak so I would have muck preferred a double pump