I worked at an evening event last night, so I got home late and didn't pack up my pump until this morning. When I went into the lactation room, I realized that while I had bottles, horns and the ice pack, I had forgotten the valve/membrane.
Thank goodness another pumping mom at my office also has a PISA and happened to have an extra valve/membrane with her! I had to pump one side at a time vs. double-pumping and I didn't get nearly as much, but at least my boobs aren't exploding.
It might be time to order a backup set of parts to leave at the office.
Re: I knew this would happen someday
or get a manual (or electric) one-sided pump to always keep in the office
That sucks! Those little suckers are easy to lose, too. An extra set is definitely a good idea. I've even had some tear, so backup is key.
Lucky for you someone had extras!
TTC #2: BFP 12/17/11, m/c 1/7/12 and D&C 1/12/12
baby blog/cooking blog

I have 3 sets - not for that reason but because I'm too lazy to wash them every day. LOL!
The good thing is, they're not too pricy. Glad someone had one you could borrow!