Period arrival

Any breastfeeding mommies have gotten their period? My baby was born May 28 and this morning I woke up with a little surprise. Thought it was too early for getting my period, was expecting to get it by December ( 6 weeks pp). I asked my mom and sister and they said they got after 6 months. I know everyone is different but should I be concern? Comment your pp week and if aunt flow has arrived 
Also I've ebf. No formula