It's hCG (Human Chorionic Gonadotropin). Your doctor will normally test this through a blood test if they need to check progress, as it's the main marker.
HCG hi hota hai na! Par agar ye level thoda slow badhe toh kitna darr lagta hai. Mujh toh lagta tha ki kahi kuch gadbad na ho jaye but thankfully sab theek raha.
HCG hormone hi hota hai aur yahi pregnancy ki khatti-meethi cravings ke liye bhi zimmedar hai haha! Iski wajah se shuru me ajeeb-ajeeb khane ka man karta hai.