Thinking of you hun. As Trill says, take your time & stay away if you can.
When having DD2 I waited & waited til I thought I couldn't survive without pain relief anymore. Then I took my time getting ready & heading off. Got there over an hour later & was 7 cm. I didn't end up needing any relief coz that was my incentive to keep going
I think your better waiting as long as you can, til you just can't bear the pain anymore, then head in. Take it easy. Baths, showers, anything til nothing works.
Good luck hun xx