Someone help plz

Katie • Hi Beautiful ladies,I’m a mother of 3 beautiful kids I’m trying for baby #4 🤰I have 11 babies in heaven I’m happily married to the love of my life

I’m starting to become very confused and stressed out about this can someone plz tell me anything about this charts one says I’m 5dpo one says 4dpo someone tells me I didn’t ovulate till cycle day 21 I’m just so confused 🤷‍♀️😩🤰