monikah, I think it will be different for everyone, I got my periods back strsight away, did not worry about ov as I was not charting for any of those times.
I was BF DS2 at 10mths when I found out I was pg.
I would give your body a couple of months to get over the birth & keep charting & temp & opk's to see how things are going, bet you will get your BFP before me