We will be covering all pregnancy and maternity issues.It could be useful both for existing moms and moms to be. Here you can ask questions about pregnancy and get quick and reliable answers to them, so that you could assess the situation correctly.On our pages we you will be able to track all your baby’s development stages and tips concerning the respective period of your pregnancy. Answering our pregnancy questionnaire you will obtain individual assessment of your condition.On this website you will also find the most important points associated with the health of a pregnant woman.Our site would be useful for anyone who is interested in pregnancy issues.If you are pregnant, be sure that it is the happiest time of your life! We congratulate you and happy for you! You are always welcome here!
According the study of majority birth, the pregnancy period usually goes 281 or 282 days.
Rule of Negele is a mathematic formula that makes the birth date counting easier.
Determine the first day of the last menstruation, then add 7 days and subtract 3 month. This will be day and month of expected birth.
Presented formula is very exact to predict the birth for females with regular menstruation cycle.
If the fecundation date is well known – the pregnancy period will be count since that day by adding 2 weeks to the date that you have from formula.
First 3 month of pregnancy ends at 14th week, and second 3 month of pregnancy ends at 28th week.
Serum human beta chorion gonadotropic hormone (hCG) test – is the hormone that generates by Syncytiotrophoblast (multinucleated cells that found in the placenta of embryos) since fecundation day, and it’s quantity grows more and more in the blood and urine of pregnant woman.
The serum test to find Choriogoninum is the most sensitive and specific test. This test allows to find Choriogoninum at 8th-9th day of fecundation.
There are 2 kind of test: quantitative (the hormones quantity) and qualitative (showing if the hormone exists or no)
Pregnancy tests from urine are different in sensitive level and they are specific. Urine tests based on exposure of Choriogoninum parts in the female’s urine and consequently chorionic gonadotropin detection at 2-5 mIU/mL density. Urine test of pregnancy may give positive results at 20 mIU/mL hormone density level, which is equal to 2-3 days before menstruation cycle beginning. This kind of tests are very exact and available. It takes some 3 or 5 minutes to complete the test and all these tests work by the same principle which is to reveal beta-subunit of Choriogoninum via antibodies. False detection of pregnancy happens at so called Molar pregnancy (grape mole) or other pathology of placenta. Also in some cases the test of pregnancy could be positive after giving birth, miscarriage or abortion.
On the other hand we have false-negative output, that may happen at techniques breach of pregnancy test; or too much urine dilute; or when taking certain kind of medicine.
Other pregnancy test via urine use agglutination inhibition method. Such test demands, that a urine drop have mixed with antibodies to chorionic gonadotropin and the chorionic gonadotropin on latex basis. If result of the test is positive (pregnancy take place), the mix remains pure.
And the test result is negative when the parts of latex agglutinate (stick together).
This kind of test is more accurate after birth and abortion, because it is not so sensitive and it confirms the pregnancy failure with confidence.
Serum tests for pregnancy can be based on different principles. The ELISA test (stads for Enzyme-linked immunosorbent assay) is the most popular in laboratories. These tests determine the total amount of beta- Choriogoninum (CG). It runs by using homogeneous antibodies that connected with CG; the second antibody is adding to interact with CG and to cause color changing. Also ELISA test called Sandwich.
Some laboratories use radioimmunoassay technique (RIT). This test based on adding radio-marked anti-CG antibodies to the not marked CG in the blood pattern. Then they count the rest of not radio-marked pattern.
The level of CG doubles each 2 days in the beginning part of pregnancy. The number of Choriogoninum can rise up to 33%, which is normal for the pregnancy. The concentration of CG goes higher at 60-70 days of pregnancy, and after that again drop down to the lower number and it does not change after 100-130 days till the end of pregnancy.
Very common symptom is the menstruation cycle delay, but sometimes the irregular cycle can not be concerned as a pregnancy period.
Very popular symptoms of pregnancy are frequent urination, increased fatigability, vomiting, nausea and thickening of mammary glands. The majority of listed above symptoms are normal.
In most cases home tests for pregnancy are correct at 9 – 12 days of impregnation. Test performance allows to disseminate the doubts.
The test for pregnancy via blood serum (it is carried out in laboratory) allows to detect pregnancy since 8 – 11 days of fecundation.
How long it takes after impregnation for the fetus egg to be attached to the uterus?
Impregnated portion (conceptus – fecundation product) gets into the uterus in the form of embryo that consist of 2-8 cells, and about 90-150 (4-7 days after ovulation) hours it chaotically moves in the womb. Most of embryos are implanted at sp called morula stage (early stage of embryo development), this is when embryo consist of many cells, in average it happens after 6 days of fecundation.
New embryo generates endometrial changes (mucous membrane of the womb) – formation of membranes that fall of at birth process.
Later on there are fast physiological changes happens, that establish mother to fetus interchange. The medicines that you take before fecundation will no influence to embryo in this particular period.
