During pregnancy, your body goes through all sorts of physiological changes, hormone fluctuations and emotional states. Unsurprisingly, these transformations not only cause you to experience mood swings, cravings, nausea, inexplicable urges to clean, and yeast infections (sometimes all in the space of a morning), they are also known to affect your libido. Just as no woman’s sex drive is the same as that of her friend/sister/neighbor/partner, etc. pre-baby bump, you can expect that her desires/aversions in the bedroom DURING pregnancy will be just as variable.
Let’s take it one trimester at a time.
Early in the first trimester, many women are not yet aware they are pregnant. They may notice differences in the consistency and amount of discharge they produce, which can affect the pleasure derived from sex. Although their body may not indicate it yet, drastic hormone changes can already impact a woman’s mood/anxiety levels, her interest in sexual activity, and the physiological balance of her body.
As the first trimester progresses, rapid hormone fluctuations (among other things) can cause nausea and vomiting known as morning sickness. There is nothing like a spinning head and the need to hover over a toilet bowl to get you in the mood, right ... ? (WRONG.) It is no surprise that during this period of pregnancy, many women feel disinterested in physical intimacy.
That said, it is perfectly normal and healthy if you ARE aroused -- sex will not hurt your baby. Many women are nervous that intercourse is dangerous for a fetus, but this is a myth. Except in highly unusual and extenuating circumstances, sexual activity will have no negative impact on the cells developing in your uterus. One main exception to this rule -- you should avoid intimacy with anyone who may have a sexually transmitted infection, as it can be passed to the fetus in vitro.
Upon entering the second trimester, many women feel that they are starting to “get the hang of this pregnancy gig.” Most symptoms of morning sickness subside, a cute tummy begins to show, and many moms-to-be indicate that their sex drive returns and is sometimes even higher than usual.