Yes it could be.
no
Brown spotting after a period means that your just coming off and it happens for a day or two after your period its no big deal so dont freak out!:]
No
It is probably because you are ovulating (releasing an egg) Lots of people get pain and brown spotting during ovulation, which occurs shortly after your period
Dead blood cells
Your period..............maybe or skid marks
Yes, it is normal to have brown spotting while on the pill, particularly if you have recently started taking it or have changed brands. Brown spotting while on the pill can occur in place of a regular period.
If the spotting is brown blood then this is simply left over blood from your period.
no not normal
You very well might be. The brown spotting is most likely to be implantation bleeding which is very common.
The fact that you had a period suggests that you're not pregnant, however this isn't always the case. the brown spotting could simply be the blood drying.