Sounds like round ligament pain.....the ligaments supporting your pelvic structures are stretched continually as the uterus grows and you put your usual demands on your body (e.g. extended standing, walking, working). It is normal and natural, but not at all pleasant. Some experience pain of this nature so intense, they come to OB for an evaluation. And yes, a maternity belt/support belt is a very good idea. They help many people who have to be on their feet continually and for extended periods. Check this article out for information:
http://www.babycenter.com/refcap/pre...ealth/205.html
As always, if you feel worsening pain or develop other symptoms that bother you, please don't hesitate to see or call your OB!!! Best wishes and here's to a healthy pregnancy.