What Are The Early Signs And Symptoms Of Pregnancy?

I kind of have a lot to say and I apologize if its too much information. First off my periods are always regular and come on time each month. I started the Ortha Evra patch in late july. I stopped the patch on October 19th. My boyfriend and I have been having a lot of unprotected sex since then. I got my period October 11th-16th because that is when I was due to have it for October. But then a few weeks later, I bleed from October 23rd-27th. Since I stopped the patch I have been feeling more tired, nausous, frequent urinating, breast tenderness and I have had cravings a lot. I just feel different. I have been bloated quite a bit too. I feel pregnant. My boyfriend thinks I m pregnant as well. Even though several pregnancy tests (first response, answer and clearblue) have came up negative. My period is due for November 23rd I m assuming and I haven t had any signs of my period happening yet. I usually get cramps days before my period and it hasn t happened yet. So my question is, could I still be pregnant even though I tested a few days before my period is supposed to happen? Please help. My boyfriend and I. Have actively been trying since October 19th. Thank you.