Baby Development - Month by Month

First Trimester

Month 2Your baby is about 1 inch long and weighs about 1 ounce. It has a beating heart. The stomach, brains, and lungs are forming. It has fingers and toes and the eyelids and other facial features are beginning to appear.
Month 3Your baby weighs a little more than 1 ounce and is about 3-4 inches long. It is beginning to move and can even suck its thumb. Arms, hands, fingers, legs, feet, and toes are fully formed. Hair may start to appear on head. The kidneys are functioning and sending urine to the bladder.

Second Trimester

Month 4All of the organs are completely developed. It is about 6-8 inches long and weighs about 6 ounces. It is becoming more active. A heartbeat may be heard.
Month 5

It is about 8-12 inches long and wighs 1/2 - 1 pound. It is busy developing muscles and moves regularly. It begins to develop patterns of sleep and activity.
Month 6

It is about 12-14 inches long and weighs 1/2-2 pounds. It can hear, swallow, hiccup, move, turn and open and close its eyes.

Third Trimester

Month 7It weighs about 3 pounds and is about 15-16 inches long. Bones are beginning to harden. It kicks, moves, arms, stretches, and wiggles. Tooth structures are forming in the gums. It may respond to soothing music or your voice.
Month 8It weighs 4-6 pounds and is about 18 inches long. It kicks strongly. Head bones are soft and movable. It hiccups, urinates, swallows and sucks fingers and toes.
Month 9It weighs about 6 1/2- 8 pounds and is about 19-20 inches long. It will usually turn in birthing position or head down, ready to be born. It moves and kicks, but does not have as much room.

Pregnancy Due Date Calculator

Not Sure When Your Baby Is Due? Read More..

Our handy calculator will help predict your most likely due date.

Select the first day of your last menstrual period?

Ovulation Calculator

This calculator will give you the approximate dates when you are fertile. It is based on a regular menstrual cycle.

When was the first day of your last menstrual period?

Number of days in your menstrual cycle:

Here are your results:

Your ovulation date (mm/dd/yyyy) is:

Your fertile days are:

This calculator predicts ovulation dates based on the date of your last period and the length of your menstrual cycle. It provides approximate dates only. Having intercourse during the few days before ovulation will give you the best chance of becoming pregnant. Since sperm can survive for several days, keep in mind that these are not the only days to become pregnant.

Remember: If your periods are irregular, this calculator is not a good way to predict your ovulation dates. Speak to your doctor about other ways to help you identify when you can conceive.

Pregnancy Help Desk