Is it normal to bleed while taking antibiotics even though I am on birth control pills?

Please continue to use the contraceptive pill as before. After the active tablets, apply a placebo followed by a new blister. Because the antibiotic may weaken the effectiveness of birth control pills, bleeding or mid-cyclic spotting may occur during antibiotic use. During the antibiotic intake and for 7 days after stopping its use, an additional form of contraception in the form of a condom should be used. After 7 days, protection will already be restored. I enclose links to helpful entries: https://www.gdziepolek.pl/artykuly/jakie-leki-oslabiaja-skutecznosc-antykoncepcji https://www.gdziepolek.pl/opinie-i-pytania/95858/dzien-dobry-bardzo-prosze-o-informacje-dotyczaca-zazywania-table