3 hr glucose test

Kadie • Wonderful hubby👫4 y/o daughter 🏈🅰️🐘 expecting #2

Help!!!! 🤨🤨🤨🤨Can anyone give me details about the 3 hr test???? Side question why does it aggravate me so much that I have to take the 3hr test!?!?!?🙄🙄🙄🙄🙄