i need some input. my temps have been going down for a few days. i think it’s because it’s getting…

i need some input. my temps have been going down for a few days. i think it’s because it’s getting cooler here at night because of the rain. (we let our window open when we sleep). and then the temp spike today, it’s very high compared to yesterday but not high enough overall? i think it’s ‘O’ cause my opk is going negative, similar to last cycle’s trend, i ‘O’ after it goes negative. but what do you think?