Missed period!

Hey girls!

I’m so excited! But need second thoughts I missed my period and my period is ALWAYS on time! I took a test but it was negative... I know a lot of things contribute to your period being late like stress and stuff but I really do think that I might be pregnant! I’ve had no signs of my period usually I break out or my back aches. But I don’t know what to do!?! Any thoughts!? Please give me advise! I need it all!!!!