Definite Signs of Pregnancy:
The only way that a woman can be identify she is pregnant is to take one of the following tests: Blood or Urine tests and a pelvic exam are necessary to confirm pregnancy.
Urine test confirm pregnancy.
Urine Pregnancy test is required to confirm pregnancy (Recommended if your period is missed)
A blood test or a urine test will help in determining the presence of the HCG (Human chorionic gonadotropin) hormone.
An ultrasound scan will also detect a pregnancy at 4-6 weeks.
Fetus can also be felt through abdominal palpations at around 3 months
Here are some pregnancy signs...
Implantation bleeding can be one of the earliest pregnancy symptoms. About 6-12 days after conception, the embryo implants itself into the uterine wall. Some women will experience spotting as well as some cramping.
Other Explanations: Actual menstruation, altered menstruation, changes in birth control pill, infection, or abrasion from intercourse.
A delayed or missed menstruation is the most common pregnancy symptom leading a woman to test for pregnancy. When you become pregnant, your next period should be missed. Many women can bleed while they are pregnant, but typically the bleeding will be shorter or lighter than a normal period.
Other Explanations: Excessive weight gain/loss, fatigue, hormonal problems, tension, stress, ceasing to take the birth control pill, or breast-feeding.
Swollen or tender breasts is a pregnancy symptom which may begin as early as 1-2 weeks after conception. Women may notice changes in their breasts; they may be tender to the touch, sore, or swollen.
Other Explanations: Hormonal imbalance, birth control pills, impending menstruation (PMS) can also cause your breasts to be swollen or tender.
Feeling fatigued or more tired is a pregnancy symptom which can also start as early as the first week after conception.
Other Explanations: Stress, exhaustion, depression, common cold or flu, or other illnesses can also leave you feeling tired or fatigued.
This well-known pregnancy symptom will often show up between 2-8 weeks after conception. Some women are fortunate to not deal with morning sickness at all, while others will feel nauseous throughout most of their pregnancy.
Other Explanations: Food poisoning, stress, or other stomach disorders can also cause you to feel queasy.
Lower backaches may be a symptom that occurs early in pregnancy; however, it is common to experience a dull backache throughout an entire pregnancy.
Other Explanations: Impending menstruation, stress, other back problems, and physical or mental strains.
The sudden rise of hormones in your body can cause you to have headaches early in pregnancy.
Other Explanations: Dehydration, caffeine withdrawal, impending menstruation, eye strain, or other ailments can be the source of frequent or chronic headaches.
Around 6-8 weeks after conception, you may find yourself making a few extra trips to the bathroom.
Other Explanations: Urinary tract infection, diabetes, increasing liquid intake, or taking excessive diuretics.
If you are pregnant, the skin around your nipples may get darker.
Other Explanations: Hormonal imbalance unrelated to pregnancy or may be a leftover effect from a previous pregnancy.
While you may not have a strong desire to eat pickles and ice cream, many women will feel cravings for certain foods when they are pregnant. This can last throughout your entire pregnancy.
Other Explanations: Poor diet, lack of a certain nutrient, stress, depression, or impending menstruation.
There's only one sure way and that is by taking a test. The earlier you find out the more options you have and more time to think about it. Physical symptoms are not much to go by since they are also pretty much the same for getting your period.