Resting Heart Rate?

Does anyone else pay attention to the rhr for ovulation/pregnancy tracking? I read online that many women have seen their rhr rise on average 2 bmp on ovulation day and the day after and the rhr stays elevated after ovulation if you get pregnant. My sleep has been messed up this week so I wasn’t able to catch my ovulation on my bbt chart. I do wear my Fitbit to bed every night though, and have been studying my rhr chart 🤔 thoughts?