Ovulation after Mirena IUD

Stephanie
This may be a silly question... I have a 12 year old and have had an IUD since she was born. (Replaced every 5 years) Never had a single period in 12 years... My husband and I are TTC so I had my IUD removed August 3rd, 2015... I had some light bleeding/ spotting around August 28th... But have yet to have a real period or a positive ovulation test... Is it normal to not ovulate for 7 weeks after removal?