Due on Boxing Day can't wait to meet my little prince!

Woke up at 5 o'clock dismorning to go toliet and ende up in a lot of pain( like I was coming on a really heavy period) cramp all down my legs,lower back pain and also lower tummy pains. That went on for about 2 hours I remember it being 5 on dot and then pain eased up around 23 min past then started again around 29 mins past then carried on from there. Finally I got to sleep ad woke up with no pain, feel a lot more heavy now though and do get the odd wired pain when i am doing things. I also been feelin unwell, (like pukeing for no reason or feeling unwell in my self) :/ I am currently 38 weeks pregnant due on Boxing Day (first time mummy). Is any one having same problem? What is it .. Can't be labour can it as its just stopped :/ so confused!! Help