Does anyone know whether it is safe to use Tea Tree Oil Suppositories in early pregnancy. I am in my 5th week and have been told by my Nurse Practioner that almost all the prescription drugs for yeast infections, (except Monistat), are class C drugs and therefore not safe to use in pregnancy. I have spent most of the day searching the net for information. Also, has anyone used Boiron Yeastaway homeopathic remedy successfully? Any input would be greatly appreciated.