Period and still showing signs of pregnancy

Breanna • Marine Wife 💍 8/6/14, 2year old boy👦🏾8/17/14, angel baby👼🏾3/7/16, angel baby👼🏾9/1/16. RAINBOW BABY 8/14/17👶🏾
I've had a period in October and November. But I have been showing signs of pregnancy. End of September early October I had breast tenderness, mid October to early now I've had weird cravings, cramping, nausea, extreme mood changes, back pain. 
I've taken five pregnancy tests and they were all negative. But with my first pregnancy I didnt take a test until I was three months pregnant and it was positive. 
What do I do. Because I really think I'm pregnant but the tests are bumming me out