Because I had twins I had an u/s with every visit I had the entire pregnancy except the 3 weeks I was in the hospital I had one every week. I had the same tech and a very high tech machine in the office who never found it. Then I had 3 different techs and a similar machine in the hospital and they never found it. Some of my u/s lasted over an hour for them to do the bio physical and everything and they still didn't find it. I never blamed my doctor I always thought that it was because there were two of them in there so it made it harder. But after delivery my mom saw my doctor in the cafeteria and she came up to my mom and hugged her an apologized. She said after the surgery she went back to the office and went over all of the u/s and she doesn't know how they missed it. I personally am glad that I didn't know because I think the stress would have made a complicated pregnancy even worse. Now if things had turned out differently I may have felt differently.