LADIES: Please Help!

I am supposed to start in 3-5 days, I've been very very moody, nauseous and tired the past week, week and a half. My hips seem a little achy and back. I've been spotting pinkish red throughtout the morning here and there its not much at all. When it's Aunt Flo she usually comes on strong along lol with bad cramps and im regularly on time to the day. Ive wasted money on pregnancy tests in past just not sure what to do. I'm very impatient and don't want to be crushed by a negative...what should I do?