I don't know what I was thinking, but I was given a used pump and used it without looking up if it would be safe. I went back to work about 3 months ago and now my poor baby has been drinking milk expressed using it that whole time. I decided to buy a new one recently and while doing research on that I stumbled on the info about CMV and am afraid I have given her contaminated milk and I had no idea. The anxiety wondering about if she could have a latent illness is killing me and I'm not sure what to do. Is there a way to find out if it was contaminated? Also, should I throw away all my frozen milk? Is it too late? Did I make my baby sick because I went with what was easy (using the pump I had rather than buying one)? She has no symptoms that I can tell, and I know worrying isn't going to help anything, but I can't stop thinking about it.