Ay hirap talaga ng overthinking especially pagkatapos magbirth, mama! One week delay is still within normal range pa lalo na if your cycle is still settling after birth, minsan it takes a few months pa bago stable ulit, kaya don't panic muna. The cramping you're feeling ay maaaring sign na paparating na lang talaga, or it could just be your body adjusting pa rin, a few of my mum friends experienced the same and it turned out normal lang. Best move talaga ay mag-test ka na kung uneasy ka talaga (home pregnancy test muna if you want), then schedule a quick check-up with your OB para ma-ease your mind and ma-confirm everything's okay, especially since you're worried. Kaya mo yan mama, just breathe!