Alamak, takut betul kan! A few of my mum friends went through this juga, and honestly kesian tengok mereka struggle dengan fever dan nausea while pregnant. The most important thing is make sure your wife sees her OB/GYN or the hospital straightaway, they need to know she's COVID-positive AND pregnant so they can monitor properly and give safe medication, especially sebab she's vomiting heavily (dehydration is a real concern). Hope she feels better soon, hang in there!