Painless contractions

Do I need to time painless contractions/Braxton hicks. Since lastnight I've been getting them and they haven't stopped. They feel like a weird wave through my whole stomach and they make my back and chest tighten up, but they don't hurt. I have some mild period cramps with them and sometimes they make me feel like I need to poop. They seem consistent but I haven't actually timed them. I kind of figured since they don't hurt they didn't matter and they were just BH but since they've been going on all night do I need to time them? Thanks!