16 wks to 22weeks ang time period n magsstrt mo. Mraramdmn si baby. If lagpas n sya sa period n yan better tell to your ob pra check po si baby. Iba iba po pregnancy may iba maaga nila nararamdmn si baby just like in my case as early as 16wks ramdm ko n sya, or ung iba late n nararamdmn.