Sounds like contractions try to keep track of them and how long they last. Are you having any pressure. Contractions can last a few weeks before going into labor. And yes it's a sign that baby is coming but every pregnancy is different it could still take awhile till he wants to come out or it could be within the week depends on how your dilating comes along too. Do u have a ob visit anytime soon I would call your doctor if you don't and double check with them too they might want to check if your starting to dialte