During the first trimester, many women report no great desire for sex because they feel tired and nauseous, but during the second trimester. Sex can be painful throughout pregnancy, not just in the first trimester. For the most part, its because of totally normal changes happening in your body. As long as youre comfortable, most sexual positions are ok during pregnancy. As your pregnancy progresses, experiment to find what works best. Let your creativity take over, as long as you keep mutual pleasure and comfort in mind. Sex during pregnancy is a completely normal, enjoyable experience. Your breasts may be sensitive, causing either increased pleasure or pain. The first trimester is when breasts undergo the most changes in terms of sensitivity and even size increases. If you still have a doubt or concern about sex during pregnancy, discuss it with your doctor. Pregnancy can bring about many changes for you, physically and emotionally. Whether your sexual relationship is satisfying or restricted in your first trimester , it is important that you and your husband continue to work on your relationship. The first trimester is the time in between fertilization of the egg by the sperm (conception) and week 12 of a pregnancy. A womans body goes through many changes during the first 12 weeks of a. Many pregnant women think that having sex during pregnancy can lead to miscarriage. A miscarriage is a pregnancy loss that happens within the 20 weeks of gestation, i. Time to avoid sex during early pregnancy (first trimester ) sex is safe in majority of females in early pregnancy but in some this may not be the case. Females should avoid sex during conditions such as having a history of miscarriage , feeling nauseous or fatigue. During first-trimester pregnancy sex, you need to be cautious about jerks. Your belly will not be as big to make missionary position uncomfortable. There are no sex positions not safe during the first trimester. Sex during pregnancy can be an extraordinary experience, says jess oreilly, phd, creator of the sex with dr. Changes in hormone levels during pregnancy can actually boost your libido, and though orgasm may be slightly more elusive during the first trimester, many women report experiencing more intense climaxes during the second.