The biggest thing that made a difference to me, or would have made things better, is knowing who is going to be there during delivery.
Get to know other docs at OB/Gyn's office, back-up Doula , in case there is another birth, and most importantly, I think...the nursing staff. They really do much of the work until you are dilated enough, and then call doc. Make sure they get along with your Doula too!
Make sure to have a birthing plan written up also and have them aware of it.
Get to know your neighbors too, not everyone gets to the hospital in time. My third I delivered myself. My daughter and neighbor(panicking) there while I talked on phone to 911 operator.
Just in case, I'd cover my matress in plastic, have towels and have clean shoelace ready. I now know the word cinturones! already knew-- zapatos
Make sure you have back up transportation in case husband not home. Things sometimes move faster than expected.
So, I tell this story, because I have a beautiful little boy, now 2, and just want to emphasise it is a natural process, and odds are good things will go well, especially since you have support.
I found focal points really helped(shiny sticker on wall, a colored light bulb,...hospitals will not allow candles,...actually found myself shifting focal points in actual deliveries), as well as pushing my arms OUT, with contractions(Had this suggested by doula, 2nd pregnancy,...so much easier). Have a favorite stuffed animal to wring onto for afterbirth shrinking of uterus, and I highly recommend real raspberry leaf tea.(Last stages of pregnancy, and while uterus returns to size)
Having a wide selection of music that relaxes you is good too, found that helped, as I got kind of sensitive and moody. Native American flute hit the spot for me.
Although Adrian carried me through on that 911 call! :)
Thinking of this as a sensual experience bringing forth new life, helps counteract the knowledge it will not be pain free,..at first I thought it an odd suggestion(read in one of my books) but ended up adopting in delivery ..somehow really reduced my pain, shifting that perspective. Most of us seem to get over the pain aspect, and have more.
Only other thing I have heard of, but did not have time to implement, was hypnosis. Actually, supposedly most pain free according to my last Doula.(hypnobabies, or something like that)
Good luck, try not worry, and savor this time.
L.