I thought BH weren’t meant to be regular but these are very 5-6 minutes for the last 2 or so hours. Also BH stop if you change position, empty your bladder etc, well I’ve done that 3 times and they haven’t stopped. They aren’t getting stronger though, but they are regular. They aren’t particularly painful either, although I can definitely feel them. I’ve had this a few times (always in the evenings) and then they stop so must’ve been BH. So confusing!