These are things I've feared throughout all six of my pregnancies so far, a lot of them aren't relevant anymore.
1. tearing or getting an episiotomy (never had an epi; I tore once when my doctor used fear tactics to make me turn and push on my back and the resulting stitches were more painful than the labor and birth)
2. shoulder dystocia (never happened)
3. cord around the neck (never happened and I'm no longer concerned now that DH and I know how to handle it)
4. having to get a repeat c-section (fingers crossed!)
5. back labor (never happened)
6. getting snowed in while in labor, or midwife getting snowed out (we'll see, but the weather report looks good)
7. post-partum depression (this has been an issue in the past but fortunately DH and I know what symptoms to look for)
8. pooping in labor (for those who are worried about that, when you're far enough along that it might happen, you really don't care as much!)
9. having to be transferred from a homebirth attempt and having the hospital staff look down on me or accuse me of stupidity/negligence for attempting a homebirth (FWIW I did have to go to the hospital and they were extremely nice and empathetic)
10. labor lasting forever (that never actually happened) ;-)
11. having to have another baby in the NICU for any reason...that was horrible!