Sayang, lepas 6 weeks pregnant ni memang normal la perut kejap keras kejap lembut, itu Braxton Hicks or just your uterus stretching, okay. But kalau cramping tu terasa macam period cramps yang strong atau ada bleeding, jangan tunda, go to your doctor or clinic asap, better safe than sorry! A few of us dalam mommy group pun ada experience ni, mostly okay je, tapi kang ada yang turned out they needed to be checked properly. First baby memang banyak yang confusing, so no harm in calling your gynae or clinic just to confirm everything is fine, eh? Take care!