Okay so every period i've ever had a week before my period arrives i get pms symptoms. my boobs will be sore up until the day i start and i will cram?

Common, normal.: While premenstrual symptoms can be uncomfortable, they are very very common and reflect normal reproductive hormone cycles. If your PMS is disrupting your life, you should make an appointment with your gyno. Sometimes oral contraceptives can mitigate this problem. Meanwhile, be reassured that you have normal menstrual cycles & most likely normal fertility.