This month I have seem to have gotten my period on time, that never happens its normally always late. My boyfriend and I have never used protection and my mother had her period every time that she had gotten pregnant. I have had nausea, head aches and abdominal pain. Could I be pregnant?

Very doubtful and while women have some bleeding or spotting they confuse with a period, no you would not have a period and be pregnant.

Also if you are always late, you are just using wrong estimates for number of day cycle. Do you track the number of days between, some women are 28, others are 30, some are 35. You are what you are.
But having a period on time is not a sign at all.

If you think you are, wait about two more weeks and try a pregnancy test, but my guess is you are not