There may be many reasons for this. This site cannot diagnose illnesses, diseases or such things as pregnancy over the internet, nor is it the purpose of this site to do so. The best that can be offered is advice. If you are truly worried about your condition then seek medical attention
Are they growing?
See a doctor
if your breasts, or nipples hurt and your a virgin it just means that your breasts are in the progress of developing, it will hurt but theres nothing to worry about its just the pattern or life!
either your about to get your period or your boobs are about to grow
Breasts do not HAVE to hurt to ovulate. However, it is often the case that they do. It depends on the person. Some times a womans breasts hurt, while another womans dont.
It can just simply mean that you have less estrogen produced during this period and so your breasts will not feel tender. It is perfectly natural so don't worry.
You may be pregnant, your boobs may be growing.. My breasts hurt after sex sometimes
It mean they are growing or your monthly cycle coming
Either your breasts are growing, you're going to get your period soon, or you're pregnant.
My guess is that this is just before your period and that is normal for your breasts to hurt. If this is not true go see a doctor if it continues much longer.
natural growth, no it doesn't hurt
Yes! Very bad!