Hai! Ni normal je biasa terjadi, especially dalam trimester kedua, perut mengeras tu Braxton Hicks contractions (practice contractions), badan kau preparing diri untuk labour nanti. A few of my mum friends experienced the same thing around your stage, mostly during the night when kau relaxed atau tired. But just to be safe, better mention it to your gynae during your next visit, especially if followed by bleeding, severe pain, atau frequent contractions, doktor akan check if everything's progressing normally and put your mind at ease!