Is it common in pregnancy?please help Its urgent.?

It is very common for women to have discharge during pregnancy. It is called leukorrhea. It is a milky discharge and is usually because of the increase of estrogen. It is made up of old l cells and secretions from the cervix. Back pain is also very normal is not a given during pregnancy. I know all of this may sound a little gross but it is normal. You may still want to see a doctor just to make sure but it is most likely not a big deal.