Clary sage is a contractant and should not be used by anyone pregnant unless they are in labour, and not at all (even in labour) if they have high blood pressure. If you want a massage which will be helpful for labour and suitable now both rose oil and geranium oil are good for relaxation and toning for the female reproductive system. I used them in massage for the last 3 weeks of my PG (DD was born at 41+4) and in my bath during labour.

HTH

Bx