Hai mama! Okay so dexa injection tu memang penting especially with your history, good decision! Honestly, cost varies quite a bit between hospitals, tapi dari apa few of my mum friends share, it's usually somewhere between RM400, 800 for the full 2-dose course at private hospitals, depending on which one you go to. Best thing is call a few hospitals near you directly and ask, they'll give you exact quote, and sometimes they have package deals. Wishing you all the best at 34 weeks mama!