Need Answers?

Ok so back story. I had a baby 10 months ago. Me and his father had sex when he was a month old and since then I have been sexless for 8 months straight because we broke up. But anyways on the 13th-15th we hooked up non stop unprotected and he didnt pull out at all. However it was on the last two days of my period even though the last day had stopped early. I was wondering: 1. If you can get pregnant before you ovulatem 2. Is it true that you are more fertile the first year after having a child? 3. Is there anyone out there who had light cramping and increase in discharge almost a week after unprotected sex? Please I need answers.