ovulation timing...

Hi there! Before having my son I always ovulated about a week or so after my period... I used to track my CM as a birth control method (yes I spoke to my doctor and obgyn about this strategy, and I have used it for years, with great success)... but ever since having my son, it seems I ovulate really early in my cycle, like right after my period ends, so in around days 7-9.... is this possible? I guess anything is really but I guess what I'm wondering is does anyone else ovulate this early in their cycle?! 
Ps we are wanting to ttc and so this is why I am asking! Our son is a year old.