Prepare for major discomfort!
While it's good news that your baby is settling into the right position for childbirth (the potentially painful news is his head — plus the weight of your uterus — may now be sitting on your sciatic nerve, which runs through the lower part of your back, buttocks, and legs.
This common condition (called sciatica) can cause sharp, shooting pain and/or tingling or numbness, starting in your rear end and radiating down the backs of your legs. Take it easy — and hope your baby changes position sooner rather than later.

Your baby is now the size of a...
Head of celery!
You are now transferring lots of vital antibodies to help build baby’s immune system in preparation for birth when he will have to fend off germs and infection by himself. As he puts on the pounds your baby will start to look like the lovely cuddly little man you will soon meet and less like and alien.
His skeletal system is starting to harden although his skull will remain unfused for some time. The suppleness of the skull with help baby’s journey through the birth canal, it can also be responsible for the cone shaped heads we often seen with newborns.
Pregnancy symptoms at 33 weeks
Prepare for major discomfort!
Thanks to your insanely high metabolic rate you will be feeling hot all the time. Other symptoms include headaches, shortness of breath and pregnancy brain.
Tips and advice for pregnancy at 33 weeks
Place a pregnancy pillow between your knees to ease discomfort while you lie on your side. If you don’t have a pregnancy pillow, use an ordinary pillow (but trust us, pregnancy pillows are so worth the dough!).