Sayang, thyroid readings and severe weight loss during pregnancy ni memang perlu ditonton closely, jangan tunggu end of month, okay? Please call your clinic or go to the nearest hospital/urgent care sekarang je to get checked, especially since the nausea came back and you're losing weight. They need to see you sooner rather than later. A few of my mum friends went through thyroid stuff during pregnancy and they all say early check-ups made a big difference. You're not alone in this, but you really do need professional eyes on it now, not later. Jangan risau saja, get yourself seen today if possible, ya?