I get the metaphor of the hatching egg,...and it certainly is cute....but it is a little too much like the easter bunny. Do you have any other thoughts on this logo. You are SOOOO on the right track....and I ove the whimsical feel, as well as incorporating feedback I have given other designers. I'm quite impressed.
here is one with heart shaped face inside, which obviously reflects new life and love....Thats what mother wants to see. A baby face or other body parts during the ultrasoung..infact they are curious to know evthing regarding the baby. May be i couldnt express myself well, but hope you understand what i mean.