Sayang, contraction ke atau Braxton Hicks tu sulit nak tau from description je, setiap org berlainan! Since ni anak kedua and dilation patterns boleh very different, better safe than sorry la. Go to your hospital or birthing centre now untuk check, they can tell in 5 minutes if it's the real deal or not. Jangan tunggu, especially since your first labour went straight to 2cm opening! Kawan-kawan I yang experience second pregnancy, timing dia lain2 je from first. Better get checked out now, at least you'll know where you stand. All the best!