Hormonal changes will affect almost every organ in the body. Some signs of early pregnancy in many women include symptoms like:

• Extreme fatigue
• Tender, swollen breasts. Nipples may protrude.
• Nausea with or without throwing up (morning sickness)
• Cravings or aversion to certain foods
• Mood swings
• Constipation
• Frequent urination

Some changes you may notice in your body in the second trimester include:

• Back, abdomen, groin, or thigh aches and pains
• Stretch marks on your abdomen, breasts, thighs, or buttocks
• Darkening of the skin around your nipples
• A line on the skin running from belly button to pubic hairline (linea nigra)
• Patches of darker skin, usually over the cheeks, forehead, nose, or upper lip. This is sometimes called the mask of pregnancy(melasma, or Chloasma facies).
• Numb or tingling hands
• Itching on the abdomen, palms, and soles of the feet. (Call your doctor if you have nausea, loss of appetite, vomiting, yellowing of skin, or fatigue combined with itching. These can be signs of a liver problem.)

In the third and final trimester you will notice more physical changes, including:

• Swelling of the ankles, fingers, and face. (If you notice any sudden or extreme swelling or if you gain a lot of weight really quickly, call your doctor right away. This could be a sign of a serious condition called preeclampsia.)
• Hemorrhoids
• Tender breasts, which may leak a watery pre-milk called colostrum
• Your belly button may protrude
• The baby “dropping,” or moving lower in your abdomen
• Contractions, which can be a sign of real or false labor
• Other symptoms you may notice in the third trimester include shortness of breath, heartburn, and difficulty sleeping