Hoping, praying, and scared

Af was supposed to make her appearance today but she hasn't yet and my basal temp is still up a whole degree... this is our first month trying after a miscarriage in December. I'm terrified to get excited. Is that normal? That I'm scared to be excited about the possibility of being pregnant again? I've hoped and prayed for a baby and now I'm terrified of reliving the nightmare we went through.