I take ovulation tests throughout my cycle.. after I hit my peak/positive ovulation the line fades til only 1 line is present.. this month the lines faded and now coming back.. 5 days til my af is due.. any ideas whats going on here? Am I ovulating a second time? I've attached a pic so yall can see how dark it is today from only 1 line on Wednesday.. (yes I know its not positive yet but already had my peak)