Supplications

No

This is authentic and the Prophet salla Allahu alaihi wa sallam used to say it after Fajr prayers.

Kindly refer to the following link https://www.assimalhakeem.net/how-can-i-protect-my-children-from-evil-eye/

This is baseless.

When making general duaa any time outside of salah, you can raise your hands as between athan and Iqamah and at the last third of the night or when traveling.

Yes

This is baseless. You can make general du’aa.

These are not from the sunnah.

There isn’t anything specific during pregnancy and no particular duaa. Make general duaa to Allah and ask him for help.