Your Persona is not a fertility meter.
Some months my Persona gives me a nice cutesy egg symbol, and then about 3 more days of "if you want to be really careful, avoid sex today". I check the sticks as they are straightforward LH (and comparison with oestrogen I think) sticks and they show a darker LH line. Other months, I get two lines of equal darkitude but it doesn't give me the dinky symbol, and usually has days and days of "get off him, you slag".
When I was told by the RE last month to use my progesterone suppositories from day 17 I asked whether I should use OPKs and she said it wasn't really worth it - if I get the peak on day 15 almost every month in living history, I should be fine, and they work out pricey (she's obviously not looked on Ebay). And I got a pretty-dark line on day 15 and a lighter one on day 16.
But now I am panicking that either I wasn't about to ovulate this month (which would be the first time EVER) or that it was set to be a bit late and the progesterone is stopping it. Also, I got loads of cramps when I started them last month on day 23, I think, but nothing so far this month, and my F-cups aren't sore either. I know I never get pre-menstrual cramps before at least day 21, and some months the soreness is later too, but I am overthinking it as usual. And after I pounced on Mr Spouse all those times, too.
Please talk me down.