Can ovulation strips test pregnancy?

B

I do not have any pregnancy tests to test and im not trying for a bub

I have been extremely nauseous and its reminding me exactly of pregnancy so thought I would just test ovulation (I should be due for my period any day now)

I tested yesterday and today

Today's ovulation strip is darker!

Is that normal? Shouldn't it be getting lighter considering my period is due any day now?