Hello..... You both should openly talk on this issue... Sexologist will help you with this problem... If she has any medical problem like pain during sexual intercourse (dyspareunia) you take her to gynecologist to diagnose the cause... Heavy work, physical and mental stress can cause loss of interest in sex.... Consult sexologist.
Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.