Is this right??

I haven’t been on my phone in a couple of months and I needed to redo all my periods because I didn’t know when I was ovulating etc... but it doesn’t look right or is that just me I’m 19 ttc and need helpful tips about EVERYTHING not just about ttc I mean like CM/temp ect.. I’ve made a post like this before and everyone was basically calling me stupid/thick for not knowing and that I basicllay need to go back to school😔☹️ thanks🙂❤️❤️

I came on my period on the 28th to the 31st dec

When will I ovulate

What should I keep my eye out for (changes with the body)