Unless a medical professional specifically warns against it, sex is fine during a pregnancy, as it poses no risk to the baby.

Baths are fine, but they need to remain at warm to lukewarm temperatures, as baths which are too hot can increase the risk of miscarriage or birth defects.

The amount of blood in your body will rise dramatically during pregnancy. By the time you give birth, you'll have about 50 percent more blood circulating than usual.

If you're newly pregnant, it's not uncommon to feel repelled by the smell of a bologna sandwich or a cup of coffee, and for certain aromas to trigger your gag reflex. Though no one knows for sure, this may be a side effect of rapidly increasing amounts of estrogen in your system. Shortly after you become pregnant, hormonal changes prompt a chain of events that raise the rate of blood flow through your kidneys. This causes your bladder to fill more quickly, so you need to pee more often. One of the early signs of pregnancy is sensitive, sore breasts caused by rising levels of hormones.

Other causes of infertility include poor sperm quality, sperm not moving well (poor motility), or not having enough (or any) sperm to begin with.

Some of the most common side effects of pills are bleeding between periods (most often with progestin-only pills), breast tenderness nausea and vomiting. They usually clear up after two or three months.