Breathe out as long and slow as you can during contractions (like everyone says, in through nose, out through mouth), trying to focus on the breath coming out of you (well, it helped me!).
I stood in a nice hot shower for ages, then sat in the bath for ages too which was great. Sometimes I'd stand behind a chair with my legs apart and swivel my hips (sexy I know!) whilst leaning a bit on the chair back....was helpful to me.
I also walked as fast as I could up and down the corridoor - trying to race away from the contraction!
I visualised with each contraction my cervix stretching open and told myself that the pain was totally worth it as it brought me closer to my darling bubs. And it was!

Good luck! You've probably missed nothing from those classes.....Bellybelly was the best source of info I got.