Pregnant?

Fanny
I'm so scared & in not ready for a baby. My boyfriend always uses a condom & from what we know it hasn't broken or anything. However, I'm having some pregnancy symptoms: lower back pain, after I eat something that I crave or just simply eat something I feel sick & don't want anymore, and my areoles are darker. What's happening? Am I pregnant? I hope not, I just can't have a baby. I'm supposed to have my period in 2 weeks, is this happening bc of my upcoming period?