Please may someone help me understand this chart?

I have multiple fertility trackers and they all say i O'ed on different days. Between them they say I'm anywhere between 5-8dpo?

Does anyone have any insight please?

I've also had a friend tell me if I have one more high temp tomorrow then this chart will be triphasic? 🤷‍♀️

I have no idea anymore 🤦‍♀️ And I'm getting fed up of looking at it now! Trying to decide if we did enough, at the right time, and if this month will finally be our turn! 😩

Please help! Xxx