I had a high risk pregnancy OBGYN and he also thought I could possibly have Placenta Previa. As early as you are in your pregnancy please do not take this as "you have it." He said he would keep an eye on it and once I was further along he would be able to tell for sure. Take precautions such as not over doing anything and take care of yourself until you have a "for sure" diagnosis. Once you have the definite then you can move forward with what you need to do at that time. You are doing the right thing by educating yourself.
I was so educated about pregnancy, IVF (which is what we had to do to get pregnant), medical terms, labor and delivery that I was asking questions and knew exactly what everything was before I even went into labor. However, I am not the type of person that gets scared and ends up terrifying myself with what I do learn; I used it as a tool only. Some women learn as much as they can once they are pregnant and before the baby gets here they have so much anxiety thinking anything could happen to them or the baby.
By the way, I ended up not having it and all went great! Good luck.