yes
No.
yes that is totally normal, but not until later in your pregnancy.
yes it is....
Yes it is possible if this isn't normal for you.
Yes. The symptoms can be due to normal illnesses or to hormone fluctuation.
no
You need to go and speak to your doctor or midwife as soon as possible
Always possible but it's normal for some girls to have irregular periods.
It is very rare, but women can menstruate during pregnancy. It is right at the onset of a pregnancy and usually coincides with the woman being very close to her normal cycle.
The normal signs of pregnancy are 1) late period 2) positive pregnancy test. Look to those first; abdominal tenderness is not a sign of pregnancy.
It is possible, especially if you were not very far along with your pregnancy.
yes, you can actually have a normal period every month during your pregnancy