Yes, it is normal. It can appear at anytime, as early at age 10, or later at 16. It can even appear earlier or later. If in doubt, contact your doctor.
Same as older women 3-5 days.
Yes, it is well within the range of being considered normal.
Don't expect a regular 28 day cycle for at least a year after that you should be on schedule
yes it is normal, it can start at age 10 or even 16 it depends on the person
It is possible if you have not started your period yet, you may be fixing to start soon.
Yes this is normal. The period you had was the withdrawal bleed.
Nothing unusual about it. Perfectly normal, give yourself some more time!
If you are breast feeding it can take months. My son was 10 months old when I got my period back.
It's normal to MISS your period if you are 12 because your cycle is not yet stable. (If you had sex, that's different. Talk to your mom if that's the case.)
yes
If you are peeing blood that is not normal and consult a doctor but if it is not you probably have got your period
Yes, This is only because you're body hasn't yet learnt when the exact time is yet.