I know that tetracycline should not be taken by pregant women because it can cause stanining of the teeth. Does also cause bone abnomalites in the fetus?

Check this site.

http://74.125.95.132/search?q=cache:zAo9i2kB36UJ:www.otispregnancy.org/pdf/tetracycline.pdf+tetracycline+pregnant&cd=1&hl=en&ct=clnk&gl=us&ie=UTF-8