Don't listen, number 1 has become upside down in May: D Not that he doesn't say the right things, but they are not the ones that interest you. I guess you're still young (if you don't apologize too much; e). If so, your cycle is still irregular, one month comes earlier, another - later or not believing a person may come on time. Sometimes he may miss. Don't be afraid of that. If you want, talk to your mother and she will explain. Don't worry (not much) if you're older. It can also be irregular. You can go to the doctor if he used to come to you on time, but not now. I don't know what exactly it is due to, it's possible from the weather, from anxiety or (I don't want to scare you, I'm really not sure) it could be an infection, but I can't believe it. Of course, if it came to you soon for the first time, this is quite normal and do not be afraid.
1 kam_kubrick answered
The menstrual cycle is the time between the first days of two consecutive menstrual periods. It averages 28 days. You mean MENSTRUATION NOT A CYCLE! From this point of view, your cycle is normal for 23 days in this case, you do not give information about menstruation. The calendar otherwise has nothing to do with the female cycle, the dates too - a month can have 28 days, it can be 31 days - one cannot look at the dates. It's ridiculous. It is crossed out in a special calendar on the first day of the respective menstruation. It is normal for it to come to you after 28 days -14 days. This is the situation - the human body is not an iPhone, there is no alarm clock, calendar and clock! This month can come to you even twice theoretically - on April 1, let's say and on April 28 ... it can come to you only on May 10 or on April 15 ... It's all up to the body - menstruation can even skip a month, and in some cases as many as 9!