Sayang, abdominal cramping masa 12 minggu tu memang biasa sebab rahim tengah membesar dan ligaments tengah stretch, tapi since you've had a miscarriage before, I think it's worth checking with your doctor just to be safe and put your mind at ease, especially kalau ada any spotting or the pain gets worse. A few of us pregnant mums experienced some intermittent cramping yang macam senggugut, and it turned out fine, tapi every pregnancy is different so better safe than sorry! Your doctor can do a quick scan and confirm everything's progressing well, okay? Take care!