I had a positive opk 10 days ago. Assuming I ovulated 24 hours later I’d be 9dpo this morning. Tested with fmu which was negative. The tests I have are cheap off amazon and I doubt they’re very sensitive like a FRER. I think it detects 25 miu?
I’m going to wait to see if AF comes around the 24th. My cycle isn’t regular at the minute so I’m relying on ovulation tests to work out when AF is due