Having sex during the first three months of pregnancy is generally safe for most couples, as long as no complications arise. At this early stage the fetus is protected by the uterus and pelvic structures, so intercourse should not cause any harm. You can have intercourse with your wife for the first 3 months and last 3 months.
However, it is essential to communicate openly with your partner and be aware of any changes in your body. Some women may experience fatigue, nausea, or other symptoms that may affect their desire for sex or their comfort during it. If you are unsure or have any concerns, it is always a good idea to consult with your healthcare provider to get personalized advice based on your specific situation.