Sexual intimacy after mastectomy hysterectomy

Is it normal for a husband to lose interest in sex after his wife has had a hysterectomy or mastectomy? Several years ago I underwent a hysterectomy. More recently, a bout with cancer meant the loss of one of my breasts. That's bad enough, but it gets worse: since my last surgery, my husband has distanced himself emotionally and doesn't seem to care at all about sex. I'm devastated. Can you help me?