My levels fluctuate before CD19 when I had high levels all day (I test around 12pm and 4pm), but they were consistently low. On CD20 I had my peak at 12pm and it dropped to high at 4pm. But yeah, it was up and down in the low range before I reached my fertile window. Until you see the high and peak you are definitely wondering if something is wrong with you, but I've learnt that it's completely normal for it so fluctuate slightly before seeing that spike.
I started tracking right after AF which was extremely frustrating to see 13 days of low levels thinking something was wrong with me, but I had a feeling during my last cycle that I wasn't ovulating during the "textbook" CD14 (this is my first cycle using OPKs), but more like a week later or so. It was nice to see the data supporting it so far. At least I now have a nice baseline lol but yeah, I am trying not to be too optimistic that this is "the month" but seeing that peak got me so excited ughhhh. I felt some ovulation pain the day after my peak, I don't temp because I know it would be too much for me right now. Trying to enjoy the sex and the general excitement but now I am in 4 DPO and I know it will be hard to resist the test on 8 DPO onwards!!
Anyways I digress
Edited because I suck at maths
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