Do you have this very terrible, nerve wracking back pain during second trimester? It happens to most women. For me it was actually the pressure of the baby that was causing it. And to make the matter worse, I ended up having more pain in the third trimested. BUT with my second pregnancy I lived basically pain free. I found this site that give a free guide to Stop the Back Pain During Pregnancy and the tips in that guide helped a lot.
But that was not it. As soon as I felt very uncomfortable sleeping I got the maternity body pillow, which helped a lot with lowering the back pain druing second trimester.
And one last thing that helped increadable with stopping the back pain during second trimester is the prenatal massage. Worked like a charm.