Each of us may have a different response for you. I think the best thing for you on an immediate basis is to just give in to your sadness and tears.
Sob if you need to - it truly is what you are feeling.

So many things will remind you of your baby girl that the tears will just flow. But there comes a point when you are all cried out. It doesn't mean you care any less - it is just that you are coming to terms with your huge loss.

Moesha is right - that searing pain (and it is that) will lessen but it simply takes time. But she will always be your little love and your heart will be full just thinking of her - but it will be with more love than pain.

I think what is so difficult for you in particular is that your little baby was very young.

Again, my heart goes out to you. I have been where you are and it just isn't easy.