M.L.
I am an ultrasound tech, you should find out the exact level the fluid was measured at. Low is 9cm's and high is over 20cm's. If it is just slightly high I would not worry about it at this time and just wait to hear the results of your next scan. They may have just eyeballed the amount anyway and may not have an accurate measurement. It does sound like they are just going to keep tabs on it. I would try and get it out of your mind and not stress about it for now. Good Luck and congrats!