and there is single artery

mam <u>sry</u> low lying placenta that reaching internal os in 2nd trimister i am 19 week pregnent

Go thru these articles mahi,, you will get gross idea..

<span style="color:#3B5998;"><b><a href="http://app.babychakra.com/article/4328">What Is Placenta &amp; Types Of Placenta</a></b></span>

<span style="color:#3B5998;"><b><a href="http://app.babychakra.com/article/3221">Is Anterior Placenta A Cause Of Concern</a></b></span>