Iam 8 months pregnant. Iam now 5th month, this is my second child. The first child was a caesarean section. Now iam getting lot of back pain. If i stand for short while iam getting severe back pain. Is this because of my previous operation. Iam using some oil to massage for my back. Is there any thing worng. Do i need to take any x-rays to find out any worng with my back bone?