Periods after pregnancy

So my baby girl is 9 weeks old and I haven't had a period yet. I had the heavy flow after birth for about 3 days and spotting/light flow for 7 days. So all in all 10 days. That was 7 weeks ago and I haven't had the slightest hint my period was coming. My husband and I slipped up a few times and forgot a condom ( not on BC yet been waiting on period) but he didn't go inside me (I know pulling out has a high chance of getting pregnant) just wondering when every one got their periods back. I was back to normal after 2 weeks with my oldest 2. By this time with them I had already had 2 periods. Possibly pregnant again?