ok contact the call center immediately. it happened with my sister and mother. they landed in feb. but haven't recieved the card. so we waited the said time even week after that and then when contacted the call center agent said there was an issue with photo's so we sent the pictures again and finally my sister got the pr last week. on june 7, 2013 finally. we are still waiting for my mother's card.
so just call them and they will let you know what's happening with your pr card? but don't waste time as we did even for a week as they will not contact you by themselves.