How without a condom - and to not become pregnant? Whether it is possible to calculate " bezopassnye...

[Nebko]

How without a condom - and to not become pregnant?
Whether it is possible to calculate " bezopassnye days " on dates monthly? (really all girls in a porno films
(And not only!) use appointed or nominated vrachem contraception...) Is any simple
Reliable ways to be reinsured?

[The anonym]

100 % zastrahovatsja are impossible. Only tablets give approximately 98 % of reliability. The rest even less. The female share is those:-)))) Esteem contraceptions on a subject here, on a site www. mama. ru and more where will find.

[Vadim]

Except for tablets, still creams (Farmateks, etc.), but a guarantee there not so high.

[Isaev D.D.]

One of the oldest methods of a contraception is continence from affinity in days, optimum to conception (t. e. During an ovulation). In each monthly cycle the female ootid is capable to a fertilization within one day, but the spermatozoon can save the activity within 3 4 day after hit in a vagina. The basic complexity consists in exact definition of terms of an ovulation, t. To. Absolutely exact attributes does not exist, and many women have fluctuations in duration of a cycle. Unfortunately, stable 28 dnevnyj 8 % of women have a cycle only. Calculation of " dangerous days is called as a calendar method. It is theoretically known, that the ovulation takes place for 14 days before the beginning of a following cycle. In practice the ovulation can occur or happen on 13 - 17 day, 4 days should be added by day of a prospective ovulation at the rate of conservations during this period of activity of spermatozoons and day after an ovulation - on ability to a fertilization of an ootid. As a result of calculations it appears, that rather safe there are 11 days before the beginning of a following cycle; 12 20 day optimum for conception at calculation of a cycle from the extremity or end (" dangerous days "), also are less dangerous days till this period. This method can be used only if the woman on a regular basis marks or celebrates the schedule of a menses and on its or his basis settles an invoice a prospective ovulation.
If a cycle irregular, it is necessary to write down dates of a menses during on an extreme measure of six cycles. To subtract or deduct 18 from the shortest cycle, to define or determine the first day when you should refrain from sex. Then to subtract or deduct 11 from the longest cycle, to define or determine last unsafe day. Efficiency of a method - 80 85 %. Disadvantages: demands daily testing, a plenty of exact observations and accurate conducting records; the opportunity of a mistake or an error in calculations or failure in duration of a cycle is always saved; illness or disease, strong experiences or change of a situation can become the reason of disturbance of a cycle, it is not enough " safe days " (see calculation of days on the scheme or plan), it is necessary to abstain from affinity during an appreciable part of month,
For an effective utilization it is important to choose such way of contraception which arranges (does not stir) or prevent) to both partners. Below the percent or interest beremennostej after a year of use of a contraceptive method is presented. Theoretical parameters of reliability (in brackets) and real results of use are given. Sterilization of women - 0, 4 (0, 4) Sterilization of men 0, 15 (0, 1) Endometrial agents 2 (0, 6) the Combined tablets 3 (0, 1) Hormonal implants 0, 05 (0, 05) Injections of preparation Depo-Provera 0, 3 (0, 3) mini-tablets 3 (0, 5) Condoms 12 (3) Caps + spermitsidy 18 (6) Physiological methods 20 (9) Spermitsidy 21 (6) Interrupted the sexual certificate or act 19 (4)