Awww! I feel ya girl! I had to wear braces and an expander at the same time too! Yes, the glue doesn't taste great, and your mouth will be sore for about 5 days, but ice cream and hot, salty water helps a lot with the pain! You also shouldn't eat popcorn or chew gum, (XD I shouldn't have done that when I had mine) and, it'll actually feel normal after the five days! You may talk funny right after you get your appliances, but your mouth will get used to them! Also, spacers only feel like chunks of meat in your tooth. Hope this helped!
P.S. I'm sorry this may be too late!