coolant water mixed with oil

What is your question?

after a short trip I restart my car xc90 then at once I got a message warning (stop engine and check coolant level, I did so ,I found the level of water is low then I added some water to discover the oil is coming from the coolant milky color , I don't know what is the problem now and how much risky to drive to the mechanic work shop about 10milesdriving,can I get your urgent advice what to do, and what's the issue? , thanks a lot