Has anyone ever had problems switching pumps before?

I use the medela and have been doing just fine with it. A friend gave me her spectra and I do honestly like it begged, big apparently my boobs have a preference too because if I try to use my medela I literally can’t get anything. Not a big deal except the medela is what I will be bringing when I travel....

I just had to leave to go teach a fitness class with full boobs because the medela was upstairs so when I changed I used it instead 😑