Is there any way to predict when I'm going to go into labor?

Experts don't fully understand what triggers the onset of labor, and there's no way to predict exactly when it will start. Your body actually starts "preparing" for labor up to a month before you give birth. You may be blissfully unaware of what's going on or you may begin to notice new symptoms as your due date draws near. Here are some things that may happen in the weeks or days before labor starts
* Your baby "drops."
If this is your first pregnancy, you may feel what's known as "lightening" a few weeks before labor starts. You might detect a heaviness in your pelvis as this happens and notice less pressure just below your ribcage, making it easier to catch your breath.
* You note an uptick in Braxton Hicks contractions.
More frequent and intense Braxton Hicks contractions can signal pre-labor, during which your cervix ripens and the stage is set for true labor. Some women experience a crampy, menstrual-like feeling during this time.
* Your cervix starts to ripen.
In the days and weeks before delivery, Braxton Hicks may do the preliminary work of softening, thinning, and perhaps opening your cervix a bit. (If you've given birth before, your cervix is more likely to dilate a centimeter or two before labor starts — but keep in mind that even being 40 weeks pregnant with your first baby and 1 centimeter dilated is no guarantee that labor's imminent.)
* Your water breaks.
When the fluid-filled amniotic sac surrounding your baby ruptures, the fluid leaks from your vagina. And whether it comes out in a large gush or a small trickle, you should call your doctor or midwife.
* You pass your mucus plug or notice "bloody show."
You may pass your mucus plug — the small amount of thickened mucus that's sealed your cervical canal during the last nine months — if your cervix begins to dilate as you get close to labor. The plug may come out all at once in a lump, or as increased vaginal discharge over the course of several days. The mucus may be tinged with blood (which may be brown, pink, or red), which is why it's referred to as "bloody show."