Could be implantation bleeding. If it is your actual period then it's unlikely that you are pregnant.
Yes
possibly, or it could be a very early miscarriage ....... or it could just be your body doing weird things during your period
If it was heavy, then no, it's unlikely that you're pregnant
It is possible that you could be pregnant, take a test to know for sure
if your period comes on early does that mean that you are not pregnant?
Yes
If you are looking "not to be pregnant" you are probably in luck. Spotting is an early indication of a late period, in your case.
If you had a period after you had sex, you're not pregnant. The uterus is shedding its lining, which, if you were pregnant, it would keep to nourish the embryo.
No.
You could be if the period is light or shorter than usual. However, if it is like your normal period but just early then it's unlikely you're pregnant. If it's light, you should take a pregnancy test
it always varies whaen you have your period. When you are pregnant you do not get a period.