Bubbles in BM?

meganhighbargin

I very rarely pump, only if I need to go out without DD, so when I was pumping today I noticed that there were bubbles on top of the milk.  Is this normal?  Did I not rinse my parts good enough from the last time I pumped?  I normally handwash and then steam in the Medela bags.  I tasted it, and it tasted normal I think, just kinda sweet, not soapy. 

So should I dump and pump again? I got 5 ounces and don't want to waste it, but I don't want a sick baby either.