Possible symptoms of pregnancy

Missing a menstrual period

Breast changes

Nausea and vomiting

Tiredness

Frequent urination 

Quickening (starting to feel their baby moving lightly around 18-20 weeks)

Chloasma (or 'the mask of pregnancy' when the skin darkens over the forehead, bridge of the noise, or cheekbones)

Probable signs and symptoms of pregnancy

Abdominal enlargement (progressive enlargement of the abdomen (belly) from 7 to 28 weeks of pregnancy)

Pregnancy test for human chorionic gonadotropin (HCG)- a hormone produced by a part of the embryo only 8 days after conception, and by the placenta throughout pregnancy

Painless uterine contractions

Positive signs of pregnancy

Palpation of the fetus

Ultrasound examination

Fetal heart tones (FHTs)-the heartbeat may be detected from 18-20 weeks gestation by placing a fetoscope on the woman's belly and listening, as in the image below: