Advice and opinions..help

So my period is due tomorrow but the last two- three days I have had bad headaches, heartburn, a little nauseous haven't been eating much at all and haven't been smoking cigarettes hardley at all I've had two in the last three days and I'm a havey smoker. I'm also one who eats like all the timeee.. could this be and early sign of pregnancy? Thoughts? My fiance is buying me a test tonight so I can test in the morning but just curious what your thoughts are.

Hoping for baby #1!! Baby dust pleaseee!