Week 1 of Pregnancy - FamilyEducation

Week 1 of Pregnancy

First Trimester

Your 1st Week

The 280-day countdown begins here-even though you haven't yet conceived.
Woman's reproductive organs
Your reproductive organs
1. Muscular wall of uterus
2. The thick lining of the uterus (endometrium) that built up during your last menstrual cycle is shed as you have your period.
3. Cervix
4. Vagina
5. Bladder
6. The pre-pregnant uterus is about the size of a plum.
7. Ovary
8. Fallopian tube
9. The ovarian ligament stabilizes the ovary within the abdomen.
10. Each ovary contains eggs at various stages of development. By the end of next week, at the mid-point of your cycle, ovulation may occur. This is when a mature egg is released from its follicle.
11. The Fallopian tube is the passageway down which a newly released egg travels on its way to the uterus.
Muscular wall of uterusThe thick lining of the uterus (endometrium) that builds up during your last menstrual cycle is shed as you have your period.CervixVaginaBladderThe pre-pregnant uterus is about the size of a plum.OvaryFallopian tubeThe ovarian ligament stabilizes the ovary within the abdomen.Each ovary contains eggs at various stages of development.The fallopian tube is the passageway down which a newly released egg travels on its way to the uterus.

Day 2 of your Menstrual Cycle

What's happening insideYour eggs are already developing, as can be seen in this color-enhanced ovary. The small white structures are the immature follicles that contain the eggs at different stages of development. Once one of the follicles matures, the egg will burst out. read more

Day 3 of your Menstrual Cycle

When you're trying to get pregnant, it helps to be aware of lifestyle and medical factors that can affect your menstrual cycle. read more

Day 4 of your Menstrual Cycle

What's happening insideIn this color 3-D scan of the human brain, the green central structure is the hypothalamus. This controls emotions and body temperature, and releases chemicals that regulate the release of hormones from the pituitary gland (green circle at bottom). read more

Day 5 of your Menstrual Cycle

What's happening insideThis cross section through the ovary shows several ovarian follicles. Between each follicle, the connective tissue can be seen. Each month about 15-20 follicles mature, but it is usually only one that will fully mature and release an egg. read more

Day 6 of your Menstrual Cycle

What's happening insideIn this artwork of the uterus, the green central structure is the pear-shaped uterus itself; the red part is the cavity of the uterus. The blue structures to either side are the fallopian tubes, which each have an ovary, seen in pink here, at the end. read more

Day 7 of your Menstrual Cycle

What's happening insideHere an egg can be seen, in orange, developing in the ovary. The cells of the follicle, in which it is contained, can be seen surrounding the egg. At birth, baby girls have millions of follicles present in their ovaries. read more

Your 1st Week

It's business as usual for your body this week. You're having a period, so you know you're not pregnant. But if you conceive during this menstrual cycle, the first day of your period will count as the first day of pregnancy. It's a good idea to review your lifestyle and to make sure that you understand how everything works "inside." Knowing the facts may help to raise your chances of conceiving. read more