Terrified! Advice?

Misha • mommy x5
I'm 13w3d with my third child I have a 5yo and a 1yo who is still in diapers who I breast fed for 9 months is extremely spoiled and very jealous of her brother I'm afraid of what she will do to the new baby and how I'm going to deal with juggling 3 kids I love my kids more than anything but I would be lying if I said I wasn't scared!