Is it possible to hold a period to be exact a week overdue?

I haven't had any robustness issues expect the suspected UTI issue addressed contained by a question I have earlier. But, I've have minor cramping a few days before my term was suppose to hold place, but it hasnt yet. I am not sexuality involved, nor am I on the pill so I know it's not pregnacy, heck I don't even have a boyfriend. I've other had irregular period like ones next to cramps, ones without, some oddy night light and sometimes oddy heavy, but never own I missed so many days. I turn 21 contained by May and I know 21 is when puberty stops, could my body just be starting to regular out?
Answers:

Please help out urgently?

Many things can cause irregularity, extremely stress. If you don't already do this, you might want to keep a calendar to track your cycle. That channel, when you next step to the doctor you will have the facts at your fingertips.

Why are my breast bigger afterwards my classmates?

I'm the same style..except I never know when I'm going to start. It's just almost different every month. Sometimes I skip months.

What's your opinion?

Our bodies are not machines, they don't work to a clock or calendar. So in attendance may be times you don't have a time at all and other times its solely a couple of weeks in between.
As long as you're hygienic and know you aren't pregnant, then I wouldn't verbs unless you don't feel right. In that defence trust your body and see your doctor.

To women only?

It's not odd to have a slowly period, or even to miss one.
Unless your cramping get serious, or you miss more than one period, I wouldn't verbs about it.