My Inplanon Expired 6 Months Ago. I Have Been Having

My inplanon expired 6 months ago. I have been having unprotected sex frequently. My period has been like clockwork, and I am now 2 weeks late. My breast are tender, I am nauseous, an emotional reck, and craving weird foods. I took one test a week ago that came back negative. Could i be pregnant, and when should I take another test.