I recently started my period and I am 14.
I had my first period, and then didn't have one for 2 months and then recently had one in October.
This lasted for approximately 8 days. I thought everything was fine and normal until a week later , there was a small amount of bleeding.

I am really worried about it because I have only just stopped my period and don't understand why there is still blood a week after.
I am so worried. Is this normal?
Could this just be because its only my second period and its irregular?
HELP ME PLEASE.

It's VERY normal - your period can take a couple of years to become regular. I am 26 and I still get irregular periods! But generally it will only take a couple of years for them to become regular. There is nothing to worry about. If you are still worried though, go and speak with your doctor, and they will reassure you the same thing. It is very normal :)