EWCM is a great indicator! If you are only testing once a day, you could have easily missed the surge. Just because you don't get a positive, doesn't mean you didn't ovulate. Personally I think you started testing too early given the length of your cycle. This can leads to all sorts of frustration. I've been there. The most important thing is BDing. Especially once you start noticing EWCM. Keep testing until you run out of tests. If you don't get a BFP this month, start charting temps and testing 2x a day next month. That might help.