I'm not sure how accurate glow actually is. My cycle days range from 37-41 and it states I would ovulate somewhere on the 21st day... But I've read u would ovulate on the 14th day or so... which would be today for me... I haven't bought the ov tests but I have been using fertilaide and I just bought some pre-seed which I have used once so far but was gonna wait to use it most during my ov days according to glow... I'm so new to actually ttc'n I don't know what to do :-) all advice is appreciated.. of course it's been fun trying every other day til then but we've been married for 5 years (together for 9yrs in september) and never been on any preventative. Taking new steps every month. On our 3rd ttc month now.