I'm 36.3 with DC2.
I experienced BH with DD1 as tightenings across my whole bump which would last 30 seconds ish and were not painful at all.
I've just had a very bad pain go across my bump, mostly the lower half which lasted about 1.5 minutes. I had the breath through it and walk around until it eased off. It wasn't an ache is was proper pain, it started gradually, peaked then faded.
The best way to describe it was like if you have ever experienced really bad trapped wind, but instead of it being 'internal' it was in front of the baby..... If that makes sense?
Google isn't helping.....anyone have experience of painful BH? I'm wondering if this is what it was.