I'm 29 weeks pregnant now and went to the beautician the other day to get some waxing done where I was laying on my back for a little while. When I sat up I felt really dizzy and feint. I know that you are supposed to avoid laying on your back so you don't squash the blood vessel that runs down your back with the weight of the baby, but now I am worried I have hurt the baby! Does anyone have any advice? Thanks!