It is very common for a person to feel nauseated when intolerable emotions rise to consciousness. If you experience nauseau only during foreplay, then we can be fairly certain that sexual activity is arousing feelings that are revolting to you. How can this be?Either you were sexually molested, and the sex act brings up memories and feelings that are sickening, or you were raised to feel that sex is dirty and bad. Once you find out exactly where this feeling is coming from, you are on the path to resolving the nausea.The nausea is merely a symptom of an underlying feeling or issue. Your task is to identify the feeling and where it’s coming from, and when you do, the symptom should pass.Realize that getting in touch with the feelings that lie behind the nausea may be overwhelming too. If this is too scary a prospect, then by all means do the work with the help of a therapist.Be brave. This problem can be resolved.