Sayang, sakit perut sebelah kiri masa awal pregnancy memang boleh jadi normal, banyak of us rasa cramping atau stretching sensations, but since you're only 5 weeks, please call your doctor or go to clinic ASAP to be safe , especially kalau sakit tu teruk atau ada bleeding. Better to check and get peace of mind, kan? Jangan tunggu, better safe than sorry untuk anak pertama kita.