NEED HELP! Do you think I am prego or not?

I have been using the Nuvaring for over 3 years and haven’t had ANY problems with it. I just got married 3 weeks ago, and the week before the wedding, I forgot to put the ring in at the end of my last cycle. My husband and I have been pretty safe but my period is now 6 days late (which is extremely abnormal for me). I have been having cramping, back aches, moodiness, and break outs for the last week which is exactly what I go through before my period but not for this long. I just took a test today and it was negative. Do you think there is a chance I could be pregnant? Are the symptons I am feeling the beginning of pregnancy or just my body adjusting to not having the hormones form my birth conrol? Please help! We leave for our honeymoon in 3 weeks and I want kids, just not this early!