Have also posted in conception.
Basically I have an 11 week old DS, I went on cerazette 2 weeks post birth, had a period 6 weeks ago but nothing since. We have been having sex (without condoms) but not that often as I am still sore from the birth as I had to have an episiotomy.
Anyway, I'm just a bit worried as the midwife told me I could get pregnant from 3 weeks post birth hence the early contraception, but I have read so many threads on here about cerazette failure that I'm really paranoid! 
Do I need to POAS? Or is it just the pill making my periods crazy?