I’m tracking my ovulation or trying to but for the past two months I’ve had nothing. I have ewcm but the tests I’m doing are coming up negative. Is it possible that I’m just doing it at the wrong time of day? (Ie when I remember!). I’m 39 with three children already so I know I can conceive but getting a bit worried that I’m not ovulating now. I’ve got the cheap tests from amazon. Am I better off with clear blue?