Alamak, HB drop macam tu memang bikin worry kan! Dari 13.8 turun ke 11.8 is quite a significant drop, nurse did the right thing switching you to Zincofer because it's higher iron content compared to Obimin, so hopefully it'll help bring your levels back up faster, sayang. A few of my mum friends kena the same thing during pregnancy, and most of them responded well once they changed to the stronger supplement; just make sure you're taking it with vitamin C (orange juice, tomatoes) so your body absorbs it better, and space it out from calcium-rich foods because those interfere. Consistency is key, and the second test results usually improve within a few weeks once the new supplement kicks in, but definitely check with your doctor at your next appointment to make sure the Zincofer is working for you, okay?