If you are not exclusively breastfeeding, it is possible. Since your cycle has not returned to normal, it will be difficult to determine if/when you are Oing. Taking the supplement Vitex (found at natural food stores and on the internet) will bring back your period and you should be well on your way.
In addition, depending on the woman, your prolactin levels may still be too high to ovulate. Vitex can naturally reduce your levels, but it may also diminish your milk supply!
You can try charting your BBT, but my guess is that you are still not Oing yet. It would definitely show whether you are.
Hope this helps some.

Good luck with your new little one and TTC.