Just had a baby in 6.4.18 Period is 2 days late.

I’m about to start freaking out because i just gave birth in June. My daughter was breastfeeding the first 2.5 months i didnt get my period until 12 weeks postpartum. I’ve only had sex twice since giving birth because I’m not on birth control as of yet. I was expected to get my period yesterday and she didn’t show today still a no show so far. Should i be worried? Normally i can tell if I’m pregnant or not because i get pregnancy symptoms. I feel none who so ever so maybe is just a delay. I’m praying because lord knows i do not want to be pregnant right now again.