Lack of interest in sex is usually a result of other problems in your life, relationship and health. There are medicines and therapy available to help you manage this problem.
Next Steps
Consult a psychiatrist for a detailed evaluation and plan of management
Health Tips
Sex is a way to bond with your partner. However, it's not the only way to bond. Try and spend time with your husband, whether it be sexual or not. That'll keep you connected during this difficult time.