I Have A Quick Question, My Girlfriend And I Were

I have a quick question, my girlfriend and I were having sex and I took my penis out and when I did there was white stuff on the outside of the condom, so I rushed to the bathroom and took it off and filled it with water, it didn't leak so it didn't break, and the base of my penis was dry so I don't think it leaked out, she is on the pill as well and I didn't actually cum, so from me there would've only been pre cum in the condom, would the white stuff have been hers? Please answer as I am worried, thank you