Is it normal or dangerous to be this late? What can I do?

A delay in your menstrual cycle can happen due to various reasons such as illness, stress, fatigue, or even without any specific cause. It is advisable to take a pregnancy test to rule out the possibility of pregnancy. If the test is negative, it is recommended to continue testing every few days until you either get a positive result or your period starts. If your cycle significantly lengthens compared to its usual length and tests remain negative, it would be best to consult a doctor.