could this be it?

This is the latest i've stayed up so far. it's 2.20 am and it's probably because of that late night out to Tesco just now. and since it's already waayy past my bedtime, i'm not feeling sleepy anymore, plus, i have a feeling that i am experiencing the early stages of contractions (i think). see, i really can't remember what was it like the last time when i had the contractions. so i'm just guessing that it is what i am having now. i'm timing it as i get it. and now it's been like every 4 minutes, yet not too painful. it's still bearable. so to refresh my memory, i grabbed the book which i've been reading about pregnancy, birth, etc...and it says that the contraction should feel like you are having period cramps, somewhere along the lower side of the abdomen. that sounds like what i'm feeling now. and it says if it is a false contraction, it should go away if i move around and change positions. this pain hasn't gone away even after i've moved and changed positions while lying down. hmmm..so could this be it? my hubby is sound asleep. i don't wanna wake him up just yet. nor do i want to go to sleep...because i can't, in the first place, because i keep getting this tightening feeling around the muscle near my lower abdomen, plus, what if i really fall asleep and when i wake up the baby is already have way out??? (yeah, i know that is impossible AND ridiculous) but i'm just too excited. :) i'll try to get some shut eye though..we'll just see how long it lasts.