As my article mentions, labour contractions do not stop - they keep going constantly. They get stronger, longer, closer together and are more consistant than 3 mins, then 20. I *think* from memory UTI's can cause some contractions / braxton hicks but not labour contractions. Don't worry too much, your labour will start soon enough and when it does you will know - you wont be here asking us if you are in labour, that's for sure! You wont be able to talk through them, walking will make them stronger and you wont be able to sleep through them.