2weeks old baby with sticky saliva.can't sleep comfortably lying down that's why i put her in my chest.what can i do?thanks

What do you mean by: sticky saliva? If your baby is getting adequate intake, the saliva should not be sticky and causing problems. Perhaps you are describing a yeast infection which makes the tongue and inside of the cheek coated with white material. This needs Rx. Many newborns sleep better with head elevated, and you can put a wedge under the mattress to raise that, or let her sleep in a bouncer/rocker.

Back to sleep: It is imperative that your infant be put to sleep on her back. Putting baby on her stomach to sleep puts her at risk for SIDS (Sudden Infant Death Syndrome). Also her sleeping surface should be firm without pillows or bumper in her crib. Also do not co-sleep with your baby as this also is a SIDS risk. If she is having difficulty breathing you should bring her to her doctor to be checked.