Low self esteem
For many men, being good in the bedroom is a crucial factor in determining their self-esteem. If your man has been having problems keeping his erection in the bedroom lately, he might be avoiding sex with you as a way of dodging the issue. In addition, if your husband has been going through a rough time lately such as problems in his job, it might adversely affect his perception of his manhood. Thus his low self-esteem might spill over to affect your sex life.