I'm also 27!weeks and I ask around and I usually get this answer "if you don't like pain is better to get the epidural " as long as you know that we all different we may end up having back problems or may end up perfectly fine my best advice for your is to take the birth classes if you can't when you do go in for labor don't scream the more your scream the longer your labor will be so as long as you breath in and breath out slowly and don't scream and just push you will be fine don't let fear get the best of you just think positive !
Just breathe. Make sure you stay relaxed. Don't clench, makes it worse. you'll do great.