Confused

So I believe I haven't ovulated this cycle, so confused and depressed. tomorrow is meant to be the last day of my fertilite week and I've used opk's every day multiple times a day and I haven't got a single positive yet 😭 I haven't even had my usual slight cramps or stomach flutters, which I usually feel when I ovulate. so depressed and confused don't know if I should even continue trying this month 😫😭