Help me please guys

Hello all and thx for reading! I am really upset!

I took a opk test on the 10th and it was at its peak. So my app said I O'd on the 11th. So I BD on the 10th and 11th. Then when the 14th comes around, I'm still checking my CM. Up until the 14th I only had watery CM. Ok then on the 14th I noticed I had EWCM (which I didn't even think I produced btw). So I was like "BABE! I NEED YOU RIGHT NOW!" Lol. So we BD on the 14th again. I just started temping this month. Now I have missed a lot of days I wont lie. Also have forgot some days until after I was awake and moving. So I feel maybe my chart is wrong (at least I HOPE it is!). Because my chart is now saying I O'd on the 16th!!! I am freaking tf out! That's 5 days after my positive opk!?! Wtf? Do you think that I should listen to my opk peak or my chart? Like I said this is my first time charting and I know there is probably some user error. What should I do? Advice PLEASE!