Missed period One of the most reliable early signs of pregnancy is without a doubt that menstrual period that did not show up. Does a missed period mean you are definitely pregnant? No, not always. Some women have cycles that are a bit irregular, so your period could just be late. Stress and some other factors can also occasionally delay a period. If your menstruation did not occur, you should take a pregnancy test, though.
Tender breasts Breasts that feel heavier than normal, and are a bit tender or painful to the touch can indicate pregnancy.
Nausea Morning sickness can, indeed, show up very early on in your pregnancy. Some women start vomiting before they even expect their menstruation. Of course, nausea and vomiting can be caused by other things as well.
Frequent urination If you have been running to the bathroom every five minutes, it is time to pee on a stick as soon as your menstruation is due. Women in their second and third trimesters of pregnancy do not hold the monopoly to frequent urination this is, in fact, often one of the very earliest pregnancy symptoms.
Fatigue Last but not least, we have tiredness. Extreme fatigue during early pregnancy is really, really common. Almost every newly pregnant women experiences it. Hormones are hard at work, as is your newly fertilized egg. You are creating a whole new being from scratch. No wonder you are sleepy!