periods after birth

Ariel
It's been almost 7 months since my daughter was born. It seems like my period cycle is getting longer and longer each month. My period is now 4 days late according to the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> App. My cycles went from like 28 days to 32 to 37 and who knows where I'm at now.
Mainly because I'm scared to be pregnant already, please say some other ladies have had similar issues after birth. If I'm pregnant, I don't know what I'll do. Probably cry for 9 months. 
I'm going to give it until 7 days late before I take a pregnancy test. In the mean time I'm just going to hope my period comes already!