What Causes Hunger, Sudden Emotions And Stomach Cramps?

Jello my name is Susana I'm 20 years old and weigh 114 pounds and my height is 4'11. I recently was 8 months pregnant. I had her on 4/14/2011 but she was a stillbirth. I waited one month after having her to have sex. The condom had broke. Latly I've been feeling more hungry, emotional and at times like throwing up. I also have been having strange cravings and have been getting cramps. During my pregnancy I didn't go through any of that. Could there be a chance I am pregnant again?? Or is something else wrong with me??