I'm 40.6 weeks, and this has been happening to me everyday for two weeks. During the day, I have about 2-3 braxton hicks every hour, and in the evening, they speed up to being about 3-4 minutes apart until I go to bed. My midwife isn't too concerned, though. She said it's just my body gearing up for labor and there's not much I can do about it. :/ Hang in there! You're almost to the finish line!
Sounds like false labour...
Yes, I've been going through the same thing. Dr said a good walk in the evening and sex if you're up for it. That will help get things going. The sperm can cause contraction and the walking helps to thin and dialate the cervix. Good luck!