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.
No.
Your period may beggining or they are growing
If your nipples hurt or you have tender breasts it just means that your boobs are growing and you are getting ready to start your period or have your next period, in other words it is perfectly normal.
Yes. As breasts grow, it is normal for them to be tender or a bit sore.
Impossible to say.
it probaly is normal
Sore breasts before period is normal. If you miss your period, take a test
Yes
either your about to get your period or your boobs are about to grow
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.
Breasts can become tender before menstruation as a result of hormonal imbalance, higher levels of estrogen can cause the ducts of the breasts to swell and become tender. This is a common symptom of menstruation but shouldn't be considered normal, it can be reduced by regulating hormones or if it continues you should talk to your doctor about the problem.