Am I really pregnant? You may be pregnant if you have been experiencing some of the 18 pregnancy symptoms below.

1. Nausea or morning sickness: Morning sickness is term to describe nausea and vomiting during pregnancy. This occurs in approximately 50% to 95% of all pregnant women as early as the first week of pregnancy. Morning sickness probably got it's name due to the fact that most of the nauseating symptoms start in the morning right after you get out of bed when your blood sugar levels are low. However, it may happen at any time of the day.

2. Headaches: If you have never experienced regular headaches before pregnancy, be prepared for some throbbing pain in your head and neck during pregnancy. The changes in your body's hormone levels during pregnancy is the main cause of headaches. Other causes like stress, poor posture, lack of sleep, dehydration and low blood sugar levels may lead to headaches too.

3. Dizziness and fainting spells: During your pregnancy, it is normal for your blood pressure to drop lower than your normal levels. When this happens, you might experience some dizziness and fainting spells in extreme cases.

4. Mood swings: With your hormones raging, it is common for women to feel grumpy during their pregnancy. It takes some time to settle into your new life by adjusting to all the changes in your body and lifestyle.

5. Fatigue: If you feel fatigued and experience some or all of the symptoms mentioned in this article, you have a good chance of being pregnant. The extra weight that you carry, hormonal changes and increased energy consumption to support a new life in your body saps your energy making you feel fatigued very often.

6. Food cravings: Craving for food that you normally would not eat could be a sign that you are pregnant. Normally, women report cravings for salty and sweet food during pregnancy while others report a peculiar desire for spicy or high carbohydrate food.

7. Weight gain and bloating: The combination of your baby's growth and your increased food intake will cause you to put on weight and your clothes to fit tighter than usual. An unexplainable increase in size of your tummy is also a clear sign that you may be pregnant.

8. Heartburn: The hormones in your body may loosen the valve between your stomach and esophagus, causing a wave of gastric acid to flow upwards, which in turn causes an uncomfortable burning sensation.

9. Lower back pain: As your baby grows in size, the added weight pulls your spine to the front of your body and causes you to experience some back pain every now and then.

10. Constipation: Hormones released during pregnancy tend to relax the intestines and cause constipation. This is not a clear sign of pregnancy because anyone can have constipation without being pregnant but if you do not get constipated often, this could be a symptom of your pregnancy.

11. Constant urination: The growing uterus presses onto the bladder and causes you to have more frequent urges to urinate than usual.

12. High Basal Body Temperature (BBT): If your BTT stays in the high temperature range for 18 days or more, you have a good chance of being pregnant.

13. Cramping: The growing uterus stretches to accommodate your new baby and this causes menstrual-like cramps to occur.

14. Spotting: Slight bleeding occurs when the fertilized egg begins to implant itself into the uterus any time from 3 to 6 days after fertilization. A lot of women confuse this with their period but this happens usually before the period starts and the discharge is lighter than normal.

15. Darkening of the areolas: Your areolas could darken and increase in diameter during pregnancy. This is a natural process by which your breasts are preparing themselves to produce milk for your baby.

16. Tender or swollen breasts: A lot of women experience sore, swollen, tingly or tender breasts during pregnancy due to the increasing hormones that are used to prepare a woman for breastfeeding. Many women report this feels like a amplified version of the sensations before periods.

17. Missed periods: If you have been sexually active and you missed a period, it is a good indication that are you are pregnant. Further tests will be required to confirm if your suspicions are valid.

18. Positive pregnancy tests: Only a positive urine test or blood test can give you solid indication that you are pregnant. The problem is, they may not be fool proof. Remember to visit a doctor to conduct further tests to confirm the results.

Please take note that not all symptoms above indicate a confirmed pregnancy. When you have a positive pregnancy test, visit a doctor to get more tests done to confirm your pregnancy. That's the only way to find out if you are truly pregnant.