I forgot a part to my pump at home and was not going to be able to pump at work. I was so uncomfortable I resorted to manually pumping myself. It was more like milking and I felt ridiculous. It did help though and I got out 2 ounces!
I bought a hand pump for just this issue. I hate hand expressing and wasting milk. The Medela hand pump I got on sake for 25 at target. Well worth that if not more!
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Re: I felt like a cow!
I've been there and feel your pain!
I bought extra parts and put them in my pump bag so I'll NEVER be without a part again!