First time using OPK

I’m sorry if this is a stupid question, so here is the line progression on my opk, the 3 ones with the test line being darker than the control being the most recent... does that mean I’m ovulating for 3 days? That seems like a long time to have the LH surge. We BD today and the first day (negative test) please help interpret :) my periods have been very irregular since my first child (just turned a year last weekend) and trying to conceive again, had a late term miscarriage prior to her) so I have anxiety about all things pregnancy!