I'm 30 yo and had a regular period last cycle. About 15 days later I began "spotting" for 3 days, the 2nd day I needed a tampon (kinda) but other 2 days just liner. I have also felt nauseas, dizzy, tired, loss of appetite, and while I was "spotting"I had perod like cramps. Could I be pg or is it something else? I haven't missed my period yet...is due end of this week.