I have not been tested either but asked my gyno about it and he said that you can be positive and negative all through pregnancy and he has had more problems with ladies testing negative and then when giving birth they are positive.

He said unless your waters break with no labour, or you are prior to 36 weeks, or you have a long labour, then they won't bother testing or give you antibiotics. If one of these occur though it is an automatic given that you will be given anitbiotics during labour.