Pregnancy brings about big changes in a girls body.
There are various pregnancy symptoms, but the first sign is normally a missed period. But you cannot turn it around, if you miss a period that does not necessarily mean you are pregnant. You can skip a month due to stress or because your periods are irregular. It’s also possible that a girl is pregnant butt still has some blood loss.
Other possible signs are nausea, fatigue, weight gain, breast tenderness, increased body temperature and having to pee more often than usual.
Don’t rely on the presence of these signs to know whether you are pregnant. If you suspect being pregnant, do a pregnancy test.

See also: symptoms of ectopic pregnancy