emotional about first born

i have a 2 year old daughter that seriously is the light of my whole entire life. i’m being induced next friday with her twin brothers and i’m super emotional about her not being the only child any more. the closer i get to having the babies the more emotional about it i am. she’s so special and i love her so much i just don’t want her to think we are going to forget about her and i don’t want her to be sad. of course i love my boys just as much but there’s something about her not being the baby any more that makes me so sad. ive been thinking about it all morning that this is my last weekend with JUST her and i’ve been a crying mess. is this normal to feel this way? has anyone else felt this way?