Period gone?

Hailey
Okay this is kinda stupid but I have a question for all. I had my baby girl 1/25/16 I stopped bleeding about 2/13/16. I've been breastfeeding exclusively and pumping too. I have yet to see my period or any signs. Is this normal? I know I'm not pregnant, just worried about my period coming back around. Also can any of you share your timeline if it did come back. 
Thank you! I know this is silly. Just a little concerned.