I know it's early, but could I be pregnant?

My period is due in 5 days. For the past several days I have experienced nausea that was only relieved by eating and only by certain foods. Others made me sick. I hardly ever feel nauseous so this is unusual for me. I've also had slight cramping, some twinges throughout my abdomen, and an occasional whitish discharge. Took an HPT today but it was neg. Do these sound like pregnancy signs? I know I have to wait until after a missed period but I feel like I'm going crazy! This would be a first and very wanted baby for us.