Its a normal flora found in the digestive systema and in vagina area in some women. It is very common and shows no signs. It will not harm or cause any issues for you. It "may" cause issues for your baby during birth as it passes through the vagina it could get in their system. It has been known to cause sepsis, menigitis, and other illness (IF) not treated. and even then it may not even pass to your baby. But better to be safe. I have it and was told early in my pregnancy I would automatically be given antibiotics through an IV during labor. If you dont treat it yuor baby has a 1 in 200 chance of catching it. With antibiotics its a 1 in 4000. I trust my Dr and will do what ever I have to do to ensure that he doesnt get it. My Dr isnt concerned and when I talked to L&D during my walk through the maternity area they said it was very common and when you come in labor they will immedately start an IV and repeat it every 4 hours until the baby is born. I did the stupid thing and looked all this up on the internet and freaked out but now that I know I have it I can be treated correctly and everything will be fine. You didnt do anything to catch it, it just is there.