I got my first BH at 36 weeks. To me it felt like someone reaching up, grabbing the bottom part of my uterus and giving it a firm squeeze. For me, they are painful, but not unbearably so. As for contractions, when I was getting strapped up for my non stress test on Tuesday, the tech informed me that I was in the middle of a rather strong one, however I felt nothing...so kind of worried about that lol. So not sure exactly how those feel just yet.