Hi my question, I had a baby about 9 months ago, they put me on the 3 month injection for about 6 months, theafter they put me on the pill Hy-ann as I was still breastfeeding for 3 months, when baby stopped breastfeeding they then changed my contraception pill to oralcon, I've been using it for 2 months now and didn't get a period, is this normal or how does it work