If you have such a history, do not assume you must abstain completely. Pregnancy can be a wonderful time to experiment with different positions and different forms of intimacy to accommodate your changing body. During the first trimester, many women experience physical complaints such as nausea, vomiting, and fatigue that may affect their desire to have sex. Urinary frequency is another common occurrence and some women may find that intercourse aggravates the condition. If you experience any of these complaints, you may be less interested in intercourse than before your pregnancy.
Breast tenderness begins in the first trimester and continues throughout the pregnancy.
Some women may find breast stimulation extremely uncomfortable while others find it especially pleasurable. Again, being open with your partner is a good way to know what both of you are feeling. Many of the early discomforts of pregnancy end during the second trimester, and renewed energy and an increase in sexual desire is common for many women. During the second trimester, the vagina becomes more engorged and vaginal lubrication increases as the baby drops lower in the pelvis, and many women say they are more easily aroused and more sexually responsive during this period. There may be a change in odor accompanying the increased lubrication which some couples may find unpleasant during oral sex.