Hello, for the first time began to accept " Tri-Mersi ". Disturbs that what it or him...

[Masha]

Hello, for the first time began to accept " Tri-Mersi ". Disturbs that what its or his efficiency. Confuses, that on the Internet has seen that additional contraception is necessary if accept for the first time, and 7 days. We did not use additional contraceptives... What probability to become pregnant?

[Soboleva L.I.]

Hello, Masha! Efficiency Tri-mersi, as well as drugh the COOK about 97 %. And additional preservation is necessary in the first month of reception for everything though the risk of pregnancy is not too great. If in expected term the menses will not come or step or will be poor or scanty, smearing - it is better to make US.