Does bleeding while taking birth control pills only occur when taking a placebo?

When using birth control pills, there is no usual "menstruation", and withdrawal bleeding due to hormone withdrawal during the interruption/use of placebo pills. Bleeding usually occurs for 2-3 days after taking the last tablet with hormones and lasts about 5 days. So it may happen that at the time of starting to take active tablets from the next blister, the bleeding will continue. Sometimes, and especially in the first months of using birth control pills or under the influence of factors such as stress, spotting or mid-cycle bleeding may occur while taking active pills. Below are the materials that may be of interest to you: https://www.gdziepolek.pl/blog/historia-antykoncepcji-metody-zapobiegania-ciazy-kiedys-i-dzis https://www.gdziepolek.pl/artykuly/jak-prawidlowo-stosowac-antykoncepcje https://www.gdziepolek.pl/artykuly/jakie-leki-oslabiaja-skutecznosc-antykoncepcji