Hiccups dari 30 weeks onwards mmg very normal, dear, baby's diaphragm sedang develop dan practice, so don't worry sangat! Kalau tidak ada tanda lain macam baby kurang gerak atau ada bleeding, just observe je dan relax, most babies do this terus sampai lahir. If you're worried sangat or ada symptoms lain, boleh mention to your doc during next checkup, tapi generally ni just part of pregnancy yang normal aje.