Increased Resting Heart Rate

Consistently, 5 days after ovulation my resting heart rate increases and is higher for three days then dips. Well this month it increased 5 days after ovulation and it hasn’t dipped yet (it’s been elevated for 6 days). Has anyone experienced this and ended up getting their BFP? Has anyone experienced this increase for other reasons? Heart rate tracked on my Fitbit. My usual resting is 65, it’s currently 74 🤷🏼‍♀️