Ahhh sayang, that's quite unusual, muntah rasa masin memang tak common. A few of my mum friends mentioned tasting something metallic or salty when they were pregnant, tapi usually it's more related to hormones or dehydration, you know? Since this happened 2 kali dalam sehari, I'd suggest you check with your doctor just to be safe, especially if you're also feeling weak or dizzy, better to get it confirmed than worry, kan? In the meantime, try sipping some water and eat lighter foods lah, see if it helps settle your stomach.