I have taken 4 pregnancy tests and got blood test done by my local doctor, all came back negative. But My period is 4 months late and I have all the symptoms of been pregnant, Tired, Sore Back, Boobs producing milk, Belly expanding, Eating more. What is going on?? I did take the morning after pill in December could this be the cause or what i going on. Im so confused and I dont want to be pregnant, Help??/