My BH hurt and sometimes also have a pattern to them. They feel like menstrual cramps a lot of times and can wrap around to my back. Usually I get them in the mornings every 15 minutes like clockwork for a few hours before they just peter out. Then I just get them randomly throughout the day. It doesn't matter what I'm doing, sitting, standing, laying down, etc. They come on whenever they want, usually more so when I'm standing and can sometimes make me think, "Ow, this really hurts." But there's been no change to my cervix yet, so they are definitely BH.