You more like are not pregnant if you are having your period. Is it a normal one or is it different? You dont have periods when your pregnant. You might get something similar to it but it really isnt one. Have you taken a hpt before your period came?
take an hpt. if it's negative go to the doc and get on b/c AND use condoms. if it's positive go to the doc and get your blood work done and get your prenatals.
is it a normal period or light? take a test just to be sure.
My periods are always random throughout the year. I can relate