My first 2 labours were normal. First more painful than the second. But my third i had back labour didnt realise it was back labour till i was in full blown labour. The lead up was normal contractions in the front. But as i progressed omg was it painful. Me and her were back to back and she was looking up. Not an ideal way to deliver. I only had gas as i was too far along for anything else. And had gas for first 2 labours aswell.
Normal labor is more cramps in the uterus, and back labor, as you know wraps around to your back. lol, BH usually aren't painful, just a tightening, sounds like you're getting some real contractions however you won't know for sure if you're going to have back labor again until you're in the mix of it all, unfortunately. Good luck and congratulations!