I don't know if I want a son

I know this sounds horrible, but I'm so unsure about having a boy.

Also, please understand that I know every child is a blessing and I am grateful at the fact that I can conceive and carry a child as I know many women struggle with this. This post is not about being ungrateful at all. I just have these feelings that are bothering me. I hate that I have this feeling as all I wanted was a healthy baby.

So I have a 2.5 year old daughter and I am due with her brother in October. At first I was excited about having one of each and I know there are a lot of people that would like to experience raising both genders. However, lately I just feel sad that it's not a girl. This will more than likely be our last child and I kind of feel sad that my daughter will never have a sister. I know that there would be no guarantee that a sister would have been good friends with my daughter, but I am so unsure of her having a brother. I want them to be good friends and I guess I feel a sister would have more in common. I don't know how to get rid of this feeling and I don't want to feel this way. I just keep praying that he is healthy and when I see him all these feelings just go away. Anyone else ever feel like this?