Yes, sometmes when you start birth control you will have break through bleeding and it can tie in with your period since you started the pill during your period.
It's not "normal" but it happens to some women
Yes it can make your period arrive one day later than usual
yes a normal period can be 3-5 day or longer :) x
No it takes longer then that for the uterus lining to change.
You should go by your last normal period.
miscarriages in the first couple of stages may appear to be a heavy period and may last a little longer than a usual period. you may see a few bloodcots also
It depends on how much longer it is lasting, on average a menstrual period will last 4-7 days but a little longer than this is normal - this is especially true if you're in your pre-teens or teens when hormonal irregularity can cause irregular bleeding. If you are using hormonal birth control such as the pill also bare in mind that irregular bleeding is normal for the first three months while your body adjusts to going from your normal cycle to being on the pill. If bleeding continues over 14 days, or if you are going through a super absorbency tampon or pads within an hour, then go to your doctor to get medication to stop the bleeding.
Yes it can last longer
No.
Not likely. Some periods are longer, some shorter. The fact that your period was only 3 days is normal. They will vary.
My last normal period was September 25th or a little before. When Is my due date if pregnant?