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 1st Pregnancy Trimester

  Home >> Pregnancy
Pregnancy Calculator

Find changes in your body and development of fetus in 1st trimester of your pregnancy, how the fetus have grown and developed inside the womb during this trimester, find length of fetus, weight and how it looks like in this trimester of your pregnancy.
Please select the pregnancy trimester ...
Trimester: 


Note: Information provided on this page is for general education only, growth of baby inside womb depends upon many factors and growth of your baby may differ slightly than indicated below, please seek medical advice whenever in doubt.

First trimester begins at day 1 of your last menstrual cycle till week 12. During the first trimester of pregnancy, the woman undergoes many physiological and hormonal changes, including cardiovascular, hematologic, metabolic, renal and respiratory changes. This changes occurs in your body to ensure the fetus is provided for blood sugar, breathing and cardiac output. Levels of progesterone and oestrogens rise continually throughout pregnancy, suppressing the hypothalamic axis and subsequently the menstrual cycle. Hormonal changes affect almost every organ system in your body.

Other noticeable changes you may experience:
  • Extreme tiredness
  • Tender and/or swollen breasts, your nipples might also stick out.
  • Upset stomach with or without throwing up (morning sickness)
  • Cravings or distaste for certain foods
  • Mood swings
  • Constipation (trouble having bowel movements)
  • Need to pass urine more often
  • Headache
  • Heartburn
  • Weight gain or loss
With changes in your body, you might need to make changes to your daily routine, such as going to bed earlier or eating frequent small meals. Fortunately, most of these discomforts will go away as your pregnancy progresses.
Baby growth in first trimester
At 4 weeks:
  • Baby's brain and spinal cord have begun to form.
  • Heart begins to form.
  • Arm and leg buds appear.
  • Your baby is now an embryo and one-twenty-fifth inch long.

At 8 weeks:
  • All major organs and external body structures have begun to form.
  • Baby's heart beats with a regular rhythm.
  • Arms and legs grow longer, and fingers and toes have begun to form.
  • Umbilical cord is clearly visible.
  • Eyes have moved forward on the face and eyelids have formed.
  • Sex organs begin to form.
  • At the end of eight weeks, baby looks more like a human nearly 1 inch long and weighs less than one-eighth ounce.

At 12 weeks:
  • The nerves and muscles begin to work together.
  • Your baby can make a fist.
  • Eyelids close to protect the developing eyes; however eyelids do not open until the 28 th week.
  • External sex organ shows up and boy or girl baby is distinguishable.
  • Growth of head has slowed, and your baby is now much longer about 3 inches long, and weighs almost an ounce.
 Next Trimester ► 
Pregnancy Trimesters
»  First Trimester
»  Second Trimester
»  Third Trimester
Fetal Growth in ...
1st month2nd month3rd month4th month
5th month6th month7th month8th month
9th month10th month
Fetal Growth in ...
Week 1Week 2Week 3Week 4Week 5Week 6
Week 7Week 8Week 9Week 10Week 11Week 12
Week 13Week 14Week 15Week 16Week 17Week 18
Week 19Week 20Week 21Week 22Week 23Week 24
Week 25Week 26Week 27Week 28Week 29Week 30
Week 31Week 32Week 33Week 34Week 35Week 36
Week 37Week 38Week 39Week 40Beyond 40 weeks


Related ...
»   Due Date Calculator
»   When is Ovulation (Ovulation Calculator)
»   Pregnancy Calculator
»   Safe Period Calculator
»   Fetal Growth Calculator
»   Fetal Size Calculator
»   Pregnancy Weeks
»   Pregnancy Months
»   Baby Growth Calculator
»   Baby Name Search
»   Find Your Star Sign
»   Find Your Lucky Number
»   Birth Control Overview
»   Birth Control FAQs
»   Birth Control Methods
»   Birth Control Contraceptives
»   Blood Sugar Conversion
»   Find Calories in different food items
»   BMI Calculator (Body Mass Index)
»   Body Fat Calculator
»   BMR Calculator (Find daily calorie requirement)
»   Waist to Hip Ratio Calculator
»   Calculate Calories Burned in different activities
»   Calculate Your Ideal Weight
»   Weight Management
»   Cloth size Conversion
»   Shoe Size Conversion
»   World Time - Find time at different places
»   Distance between Cities (or Town)
»   Calendar Creator



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AreaAstrologyBaby NamesBankingBirth Control
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PregnancyRadiationScientificSpeedTechnology
TelephoneTemperatureTime & DateTrain InfoVolume
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Supported Conversion Types ...
AccelerationAngleAngular AccelerationAngular Velocity
AreaBlood SugarClothing SizeComputer Storage Unit
Cooking VolumeCooking WeightData Transfer RateDate
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Energy DensityEnergy MassEuro CurrencyFluid Concentration
Fluid Flow RateFluid Mass Flow RateForceFrequency
Fuel EconomyHeat CapacityHeat DensityHeat Flux Density
Heat Transfer CoefficientIlluminationImage ResolutionInductance
Kinematic ViscosityLengthLuminance (Light)Light Intensity
Linear Charge DensityLinear Current DensityMagnetic Field StrengthMagnetic Flux
Magnetic Flux DensityMagnetomotive ForceMass Flux DensityMolar Concentration
Molar Flow RateMoment of InertiaNumberPermeability
PowerPrefixPressureRadiation
Radiation AbsorbedRadiation ExposureRadioactivityShoe Size
SoundSpecific VolumeSpeedSurface Charge Density
Surface Current DensitySurface TensionTemperatureThermal Conductivity
Thermal ExpansionThermal ResistanceTimeTorque
VolumeVolume Charge DensityWater Oil ViscosityWeight



Are you looking for ...
List of Supported Conversion Types  (sorted) Quick Info  -  Lookup and Reference
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