Feeling nervous

I am so nervous right now. I've been having a change in appetite, my boobs hurt, I'm nauseous so much. This all started around December 2 and hasn't stopped at all. My period is due Thursday. I have that thought I'm pregnant, but can't bring myself to take a test. I started having some stomach pains and I feel like my insides are going to fall out. It doesn't feel like period pains. I just don't know what to think and my body has been so off for the past few weeks. I'm ready to know what it is and a little part of me is hoping I'm pregnant. Needing some positive thoughts