quick help please?

Allie
I ended my period on the 14th. I just got off birth control 2 weeks ago and I had my withdrawal bleed.which is my period. So when should I ovulate? It tells me my predicted ovulation is on the 21st. Could that be right? Btw I stopped bc on my own cuz I just found it I can take other things besides bc to regulate my period. NOTE: I was only on bc for a month and a half.