Is The Effect Of Slinda Still Reliable While I M Taking The Placebos Since I Vomited After Taking My Birth Control?

I m from Germany and I take the birthcontrol Slinda . 12 days ago I threw up after I took my birthcontrol. This birthcontrol has 24 days with active ingridients and at the end there are 4 placebos. I threw up at the end of week 2. I didn t took a second pill because I didn t knew I could I went on normal the nect day but for 7 days we used condoms as a second protection. Now I was wondering whether the effect is still there while I take the placebos. Yesterday was the day I took the first placebo so I can t skip the placebos now. I read I could also but this was too late too. Please help me and tell me how I can protect myself now.