Extreme tiredness is often the most common sign of an early pregnancy. Although it is common to become more tired in the later stages of pregnancy, this extreme tiredness and lack of energy (lethargy) usually last for the first twelve weeks (first trimester).
Why are you so tired during the first trimester?
During early pregnancy, hormonal changes are likely the cause of fatigue. Your body is producing more blood to carry nutrients to your growing baby. Your blood sugar levels and blood pressure are also lower. Hormones, especially increased progesterone levels, are responsible for making you sleepy.
Can you tell if your pregnant after 1 week?
1 Week Pregnant Belly. Inside your 1 week pregnant belly, your body isn't only releasing last month's egg. But some common early signs of pregnancy in the first weeks after fertilization include breast soreness or tenderness, nausea, fatigue, and frequent urge to pee. At one week pregnant (a.k.a.