Ovulation test

Megan • Trying for our third! First baby a miscarriage, chemical then rainbow. Second baby 9 months of trying 4 with clomid. Hoping for a quick easy pregnancy for #3
I have a question about ovulation testing. I took one yesterday and there was a line but it wasn't as dark as the control and then when I tested today there was nothing. If it normal to have a positive test and then nothing the next day?