Ahhh I understand your anxiety, sayang, thickening of the uterine lining can sometimes be a sign of pregnancy, tapi banyak sebab lain jugak boleh cause it, so jangan stress sangat dulu! A few of my mum friends yang TTC dulu pun pernah kena nasib yang sama, and some turned out pregnant while others tidak, so it's really a wait-and-see game. The good news is your doctor is monitoring you, so just follow up closely next week lepas period comes or doesn't, okay? Fingers crossed for you, and do check in with your gynae again soon kalau ada anything else yang worried