SOLVED. A women is close by when a nuclear test takes place. she is just pregnant her belt buckle protects her unborn child. The child a girl grows up her organs can be transplanted to anyone (universal donor) [s]

[Gill]

A thriller set in America. A women is close by when a nuclear test takes place. she is just pregnant her belt buckle protects her unborn child. The child a girl grows up her organs can be transplanted to anyone [universal donor] A tycoon needs a transplant finds out about her this puts her in danger.

[Lobstergirl, au gratin]

Gill, if you're still looking for this, it will help if you add more descriptive information to your header.

Also what year was this published? If you don't know, what year did you read it? Do you remember anything about the cover?

[Juels]

Transplant by Leonard Goldberg

[Lobstergirl, au gratin]

Sounds right to me. Moving to Solved.