i need help🤔

Kira

so I have been tracking when I ovulate.i got two dark lines on the 16th of March and also on the 17th. I am expecting AF Friday the 30th and decided to test. got two bfn and decide to take an ovulation test just for the hell of it and the ovulation test are super super dark.. I'm confused because I thought that the ovulation test line lightens after you ovulate.. can anyone help me..?