My period was on the 2nd September till the 3rd last 2 days and this month my period was a day late and I have only just came on (3rd October) this is not normal for me both periods where light unlike my normal period which lasts around 4 days. Could I be pregnant?

Impossible to make any sort of meaningful comment from such scant information.

On the first week of September I was meant to have a 4/5 day period however it only lasted 2 days and this month my period was meant to come on the 1st or 2nd of October and this morning (3rd) I have light spotting as I wiped there was a little blood but nothing like my normal periods I am on the pill however I had forgotten about 3/4 at different times on each pack, I've been having fatigue, bloating, cramping and abdominal pain. Do you think I could be pregnant?

Yes, you could be pregnant. There is no form of birth control that is 100% effective. Being that you did not take the pill correctly, you increased your chances of pregnancy.

You will have to wait at least 2 weeks to see if your period does indeed come. If not, take a pregnancy test using first morning urine.

I'm on my period now but it was a day late and when it started it was more like spotting and only a little blood when I wiped, also I'm only 17 could that increase my chances?

Your age has nothing to do with pregnancy.

If you are on your period count your lucky stars. The first symptom of pregnancy is a MISSED period. Since you have your period chances are slim that you are pregnant.

Being a day late means absolutely nothing. Many women change their cycles every once in a while. It's even possible to skip a cycle completely for no reason.

At 17, though, you should not be trying to get pregnant. There are many health risks involved with pregnancy at your age.

But the thing is its nothing like a normal period it is really light and not normal

You will have to wait until next month to see if you get your period as expected.