Sister negativity?

I am #5 out of 6 kids and my older two sisters in their later 20s I feel are very upset that I am having a baby all the talk about is that I'm spoiled and always get what I want. And that I'm only getting so much attention Bc it's our moms first grand baby. It makes me feel bad that they are having trouble getting pregnant but it took me a year of ttc just to get pregnant I don't know if I should say something to them Bc it is really hurting my feelings that they feel this way about me or should I just stay quite and let them have their time to be upset and come to the conclusion that the baby is coming if they like it or not ?? I just don't want to hurt them anymore