During pregnancy, if you wish for a beautiful baby, I highly recommended to recite Surah Yusuf once every day as a Wazifa. You can begin by reciting Durood Pak three times, then recite Surah Yusuf with sincerity, and end again with Durood Pak three times. This can be done at any peaceful time of the day, preferably after salah, while in a state of Wudu. Surah Yusuf is known for its beauty and tells the story of Prophet Yusuf (A.S.), who was granted exceptional beauty by Allah. With this intention, and by placing your trust in Allah mercy, recite it daily throughout your pregnancy. Along with this Wazifa, continue making Dua. InshaAllah, by the will of Allah, you will be blessed with a beautiful baby.