Почему у меня задержка месячных после приема таблетки?

You didn't mention the pregnancy test and also even if it is possitive, you need to see your gynecologist. They can ask for some tests and confirm about pregnancy or any other health conditions
 

Missing a period is possible­. It happens if the pregnancy hormone­ is low. Being late for 12 days could mean you're­ pregnant. Stress, weight change­s, and hormone problems could also cause this. If you think you might be­ pregnant, wait. Take another te­st later. If still unsure, get a blood te­st. Blood tests are more accurate­ than home tests.

Since you characterized the symptoms, it could be possible that a STI has occurred. It is advisable to consult a gynecologist or urologist immediately and get tested so that the appropriate treatment can be administered on time.

If your period is normally regular but it’s a little late this time, don’t panic – it could be due to stress, weight change or other reasons. Sometimes our bodies can be a little unpredictable. If you’re worried that you might be pregnant though – try taking a test just for peace of mind. Keep in mind that there are lots of things that can cause changes in your cycle.

There is always a small chance of pregnancy, especially if your menstrual cycle is irregular or shorter than average, the occurrence of your period is generally a good indication that you are not pregnant.

The pills are to be taken orally with water