Sayang, ini tak boleh main-main, kalau dah lewat 29 hari, you must go to the clinic or hospital first to check what's happening. Boleh pregnant, boleh hormones, boleh banyak reasons lain, tapi doctor kena check properly dulu before anything else. Jangan ambil ubat turun darah tanpa doctor's clearance ya, because kalau pregnant dan ambil ubat tu, boleh bahaya untuk you and baby. A few of us mum friends have been through this, and setiap case lain-lain, so please get checked first okay? Go to your nearest klinik kesihatan or clinic, jangan delay. Praying it's nothing serious for you!