If there is mid-cycle spotting when using birth control pills and the pills are poorly chosen, do they still work?

For @Katarzyna: In order for successful implantation and pregnancy maintenance to occur, the thickness of the endometrium should be at least 7 mm - most often from 7.5 mm upwards. Therefore, in your case, the thickness of the endometrium of 6.4 mm does not indicate that the drug works badly and with properly used tablets the risk of pregnancy is negligible (it is about 1%). I attach links to helpful entries: https://www.gdziepolek.pl/opinie-i-pytania/85780/czy-jesli-moje-endometrium-ma-grubosc-6-4-mm-oznacza-to-iz-tabletki-antykoncepcy https://www.gdziepolek.pl/kategorie/tabletki-antykoncepcyjne-dwuskladnikowe https://www.gdziepolek.pl/artykuly/jak-prawidlowo-stosowac-antykoncepcje

Thank you for telling me. I take the pills very regularly, I do not skip anything and I am careful about other drugs, but the doctor mentioned that my endometrium is 6.4 mm or is it not too much with tablets? I take them very carefully and have never missed any