I'm afraid I can't help re BH, as I am not even sure if I am having them or not. My belly does go tight, but I jyust assumed that was because baby had moved to the front? Also, it seems to have hiccups ALL the time, and as it hasn't engaged yet i still have pressure in my ribs and other rumblings and movings around so am not sure what is going on in there LOL
I started taking raspberry leaf yeterday though, after seeing my midwife in the morning who jiggled baby around (blimey midives have pokey fingers don't they?!) so I am not sure whether it is the raspberry leaf or the joggling but baby seems to have been having a non-stop party in there since, there has been no end of tightenings, wrigglings, mild pain / pressure in my pelvic area, etc. I am assuming that it is trying to engage.
None of it has been painful though, just odd!