Its it possible that could I be pregnant if I had spotting the first day then light bleeding the next two days ?

Assuming you have had sex recently, then yes.

We have to assume there are no other health issues to stop you from pregnancy and we have to assume you were sexually active.

But yes, this is what happens to some women who are pregnant the first period after pregnancy is very light and short.

Now it also happens sometimes just because, no reason.