Clear liquid coming out of only one breast

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So out of curiosity I squeezed my breasts the other night just to see if anything came out( I know it was probably not the best thing to do because I hear that can cause contractions or something like that) my Curiosity just got the best of me I guess, with this being my first baby and all. I'm worried because only one breast had a clear liquid coming from it whenever I squeezed on it. Was this colostrum? Is that a problem that I couldn't get any liquid to come out ofmy other breast? It's making me worried.