Yes you can have sore breast within only 3 weeks of pregnancy, its has happened to me.
Yes.
No
No. Just because your breasts are sore doesn't mean that you are pregnant. When you get your period, your breasts tend to get sore too. Sore breasts aren't the only sign of pregnancy.
You could be pregnant. You should go to the Doctor and receive a pregnant test.
If you were having symptoms 3 weeks before your period was due you were not pregnant because you get pregnant 2 weeks before a period. Being 1 day late is neither here nor there. If your breasts are sore and itchy and you are nauseous that could be many different things. I suggest you see a doctor.
Yes. Take a home pregnancy test. It is great you know your body so well. If you are not pregnant and this continues contact your physician they will be happy to discuss your cycle w/you.
Yes
You are pregnant more then likely
you could be pregnant......
Yes
You very well could be pregnant. Get a pregnancy test if your suspect pregnancy.
Some women say they are sore, other women experience soreness with periods.