 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  the day than usual. Vomiting or diarrhea can prevent your birth control pills from working well. If you have vomiting or diarrhea, you may need to use a back-up birth control method (such as condoms, spermicide). Follow the directions in the Patient Information Leaflet and check with your doctor or pharmacist for more details. Your pill pack contains 21 pills with active medication (with hormones). It may also contain 7 reminder pills (without hormones) at the end of the pack. Take one active pill (with hormones) once daily for 21 days in a row. If you are using a product with 28 tablets, take a reminder pill once daily for 7 days in a row after you have taken the last active pill unless otherwise directed by your doctor. If you are using a product with 21 tablets, do not take any tablets for 7 days unless otherwise directed by your doctor. You should have your period usually within 3 days after you take the last active tablet in the cycle. After you have taken the last reminder pill in the pack or gone 7 days without taking an active tablet, start a new pack the next day whether or not you have your period. If you do not get your period, consult your doctor. If this is the first time you are using this </s>