TTC Baby #2

I’ve been off birth control for one month now and just had my first normal period again. It only lasted four days and I stopped bleeding on the 11th. My husband and I did it on the 13th and I’ve been spotting again today (the 15th). I’m not sure if my body is still adjusting but its odd for me to have breakthrough bleeding. My doctor cleared me to get pregnant again and said I would be really fertile coming off birth control. I always know when I ovulate and I really don’t think that I have ovulated yet. Not really sure what’s going on down there. Have also been a little crampy throughout the day, too. Anyone have any experience similar when coming off the pill?