hi there!
i get bH now with #2 and they take my breath away - i have to waddle and is so tight that i cant move - ie pressure down there.
So in a way yes it is very uncomrtable.

HOwever if you cant talk or walk whilst having a BH i would tell your OB.

With no .#1 i had BH very regularrly 7 mintues apart some days for 12 hours (and i am not jokin)... when the real contractions started they were from my back and gradually tighthening to the front (BH seem to tighten very quickly - whereas the contraction was a peak and then wore off)...

I went to the hosptial at 39 weeks and they said they were bh and to go home - 3 hrs later DD was born!!