Pregnancy calendar (Pregnancy chart)

Note: Information provided on this page is for reference only, please seek medical assistance when in doubt

Pregnancy is the development of one or more offspring known as an embryo or fetus inside woman's uterus. The length of pregnancy is generally about 40 weeks from the start of the last normal menstrual period which includes 2 weeks before conception.

Human pregnancy is arbitrarily divided into three trimester periods of three months each, as a means to simplify reference to the different stages of prenatal development. This corresponds to about 40 weeks from the start of the last menstrual period or about 9 months.

Below chart shows the division of trimesters, pregnancy months and weeks and important fetal development in that period.



Pregnancy Trimesters
»  First Trimester
»  Second Trimester
»  Third Trimester

Fetal Growth in ...
1st month	2nd month	3rd month	4th month
5th month	6th month	7th month	8th month
9th month	10th month

Fetal Growth in ...
Week 1	Week 2	Week 3	Week 4	Week 5	Week 6
Week 7	Week 8	Week 9	Week 10	Week 11	Week 12
Week 13	Week 14	Week 15	Week 16	Week 17	Week 18
Week 19	Week 20	Week 21	Week 22	Week 23	Week 24
Week 25	Week 26	Week 27	Week 28	Week 29	Week 30
Week 31	Week 32	Week 33	Week 34	Week 35	Week 36
Week 37	Week 38	Week 39	Week 40	Beyond 40 weeks