I think i am pregnant

I have pcos, and i think i am pregnant , my last mp was on 11/19/2010 and for the last 3 month were normal . now i am feeling nausea, dizziness, i cry for everything, food taste weird and smell weird, my breast hurts sometimes .. but what im concerned is about a cramp like pain i have . it is like on my pelvic bone goes around my back , some days is on the right side and the the others on the left.. i really want to have a baby but i do not want to take a preg test yet cuz i do not want to get disappointed. should i be concerned about this pain?

Thanks
Roxy2star24