Do I have grounds for a lawsuit if my OB witheld information for almost 2 months?

I am currently 32 weeks pregnant and had the anatomy sonogram around 26 weeks. At the appt after my sonogram my OB told me she noticed an echogenic focus on the babys heart and sent me for a repeat sonogram. After the second sono she referred me to a specialist 2 hrs away but wasnt particularly worried about the spot. I went to the doctor today and she had asked me if I saw the specialist and started flipping through her notes. She then proceeded to tell me that the sonogram also failed to show both feet and hands and that my daughters face appeared flattened. No one ever mentioned this information to me for 6 weeks! And Ive spoken to her and several nurses since the initial sonogram, saw her multiple times and even went to the hospital for bleeding. The doctor acted as if I knew all of this information all along and even went to check with her nurses to see if I was lying about not knowing the concerns they had! Besides the fact that I am furious that this information was overlooked and was told to me almost 2 months later, I am very concerned now that I am close to my due date and have no idea if my daughter may be born with multiple deformities. Is this grounds for a lawsuit? Money will not change the fact that something may be wrong with my daughter but someone should hold this practice responsible for being disorganized and not professional.