Menstrualcycle and Ovulation



A menstrual cycle is counted from the first day of bleeding (menstruation).
This is regarded as CD 1and continues until the first day of the next period. 

After the menstruation the level of FSH, which is the follicle stimulating hormone, rises. As the follicles grow, they excrete oestrogen which stimulates the growth of the lining of the uterus in preparation for implementation of a fertilized egg.
When the follicle is mature, the rise of oestrogen triggers the release of LH, the luteinizing hormone and after 24-36 hours the follicle ruptures and the egg is released. Ovulation has occurred. 

The ruptured follicle (Corpus luteum) will start to release progesterone to prevent a new menstruation, so the fertilized egg can implant in the thickened lining of the uterus. 
If a pregnancy does not occur, the corpus luteum withers and dies, usually around CD 22 in a 28 day cycle. The drop in progesterone levels causes the lining of the uterus to fall away. This is known as a menstruation and the cycle then repeats.  


The time of ovulation can be determined by an ovulation test. It is an easy method with relatively high accuracy. When you have a positive ovulation test, the ovulation will occur within 24-36 hours.
The estimated time of ovulation can also be predicted by an ultrasound, which can be performed at Gaia Pregnancy Clinic. Hereby we can establish the number and size of follicles. 
As soon as you have a positive ovulation test, you will contact the clinic and we will schedule an appointment for the insemination.
Depending on when the ovulation will occur, you can choose to be inseminated twice in the same cycle with a minimum of 12 hour range. The first insemination should then be performed approximately 12 hours after the positive ovulation test.







Gaia Graviditetsklinik | +45 98 555 006 | cvr. 29276757 | (Webløsning af Boosting Business)