Hello. I would try not to worry too much at this stage u are probably safe. From my experience personal with myself it took me at least 1 month for the pill to get out of my system before I started to ovulate again. But I found the longer I was on the pill (i'm looking at at least a good couple of yrs) the longer it took for my body to come right again. My last baby who is 11mths now, it took 5-6 mths & that was from being on the pill for 7-8 yrs.
When u are due for your AF & if it doesnt arrive maybe give it a week or 2 first before geting tested.