Sabar ye mama, biasanya referral letter tu means Dr nak check condition ko dulu, induction tak automatic, dia akan assess cervix, baby's position, semua tu baru decide next step! A few of my mum friends yang keluar letter macam ni, most went for monitoring je first, taklah langsung induce hari tu, tapi sebab ni menyangkut keselamatan mama dan baby, better tanya langsung sama Dr yang refer tu atau nurse kat hospital to confirm apa exactly akan happen on the 21st, so you're prepared and tau what to expect. Good luck sayang, dah dekat sangat dah!