"Lightening"

My sister told me about babycenter.com when I first got pregnant and it's been an awesome resource.  Between babycenter.com and our birthing class the last two weekends, we learned about "lightening."  Apparently, when I start feeling like I can breath again (relief for the diaphragm), heartburn stops, and I feel major pressure on my pelvis - labor is getting close because the baby is dropping down!  The last two days I've been able to peacefully sleep without heartburn, labored breathing, and general discomfort.  I guess with the first baby, this can happen weeks before labor, but I'm more than happy that I'm feeling great and sleeping!  Thank you for those of you that were praying for this!