Ovulation confusion

Megan

Can anyone explain what’s going on with my ovulation? I missed my period in the end of September I’m 12 days late and over the last 5 days I have taken a test a day and they end out coming out the exact same isn’t it supposed to be a peak and then drop down? I havnt seen anyone have test like theese. I took 5 pregnancy tests the first one I took came out super positive and eveything after been negative.