You are now into the 3rd week of your pregnancy, which means it is more than 14 days since the 1st day of your menstrual cycle of previous month. By this time the ovulation and fertilization of the ovum has either taken place or is going to happen soon enough. The end of 2nd week and beginning of 3rd week is a very high fertile period for woman. If you are not one of those lucky couples for whom pregnancy happened naturally; this would be the time to try your luck.
Wrong timing and wrong sexual positions can shoo the stork away. This is the time when the one lucky sperm among the approximately 250 millions manage to fertilize the egg in the fallopian tube. Your real pregnancy after conception lasts only 38 weeks, hence 3rd week of pregnancy would be the real beginning of your pregnancy.
Changes In Your Body:
There are no overt symptoms, signs or changes in your body yet. In fact, you do not even know you are pregnant in the 3rd week. But there are many changes taking pl
What Happens During Ovulation?
In the 3rd week of pregnancy, unknown to you, your uterus is enthusiastically getting ready for the baby. After the process of oogenesis, the matured ovum finally raptures itself away from the ovary. As the ovum is helpless motionless being, it is swept into the fallopian tube by the fimbria which is a fringe of tissue covering the end of fallopian tubes. The ovary and fallopian tubes are not directly connected; hence the fimbriae play an important role of transporting the ovum from the ovary into the fallopian tube.
During ovulation, the fimbriae gently tap the ovary in a sweeping motion, causing the ovum to move. The ovum is thus carried by the sweeping motion of the fimbriae into the fallopian tube. It is amazing that just one fimbria known as fimbria ovarica reaches up to the ovary which is very crucial in carrying the egg cell to the fallopian tube. If this one thin line of thread fails in performing its duty, you will not be able to conceive.
On the other hand, the uterus is getting ready to nourish and protect the fertilized egg. The endometrium, also known commonly as the uterine wall, thickens to felicitate the embedding of embryo in it. The whole process is accompanied by a great surge in the FSH (follicle stimulating hormone) and LH (luteinizing hormone) which is released from the pituitary gland.
What’s even more amazing is the fact that even if you don’t notice, this happens in your body every month, whether you are trying or not to conceive. But the only difference is that, if the ovum is fertilized the process continues to felicitate your pregnancy, if not it will change your body in preparation of the menstrual period.
Fertilization Of The Ovum:
Though this happens very silently, unnoticed by anyone, the fertilization of ovum by a spermatozoon is one of the most magical events taking place in your life. This is the time when your baby comes to life. The ampulla, which is the widest region of your fallopian tube, is where the union of your ovum and sperm of your partner takes place.
From the cellular point of view, the fertilization of ovum by the sperm could be a very chaotic occurrence that takes place inside your body. The ovum with a life span of just 24 hours waits motionless in the ampulla for the sperm to arrive.
When the ejaculation takes place, millions of sperm travel through the vagina to reach the fallopian tube. Only a few hundreds of them reach their destination, whereas others lose the race. Among them, a lucky few reach the egg in the fallopian tube and surround it with hope of getting a chance at life. This moment will determine whether they will be born as a loving baby or die as a single cell.
The egg which is waiting for fertilization doesn’t make the process any easy for the sperm. It is covered by jelly like layer which needs to be broken by the tiny sperms. The fiercely competing sperms try to break in head first by releasing an enzyme from their acrosomes.
The enzyme will then eventually break the egg membrane, and only one sperm succeeds and penetrates the cell membrane, though there will be others vying for this honor. When one of the sperm finally enters the ovum you are officially pregnant. It is amazing to know that the fertilization process takes nearly 18 hours to be complete.