Ovulation test readings

Hello everyone! 
Was just wondering if the very last one (1-21) looks like I am ovulating today or if it is a negative. Can't really tell if it is positive or not. The line itself is very similar in color to the control. 1-18 looks pretty close as well but I honestly didn't care for these tests.
First time using them btw, and I am confused as heck. The lines clearly get darker but I can't seem to figure out if I already ovulated or am currently ovulating or if I just missed a time frame and I am coming down from ovulating, I haven't a clue. 
Let me know what your thoughts are, see if I can't get some definitive answers! Ask me anything you need to help me figure this out. 😊
Thanks for all those who comment! 
Baby dust to all!