I had my last period on June 30, 2012 and my back hurts and my legs cramp up

Do you have sex ? Can't be pregnant unless you are sexually active? What is your age? Are your periods normally regular?

Have you taken a pregnancy test yet

Yes I am sexually active, I'm 24 years old, I have taken a test it was negative but I miscarried last year I took a test at 5 weeks last time and it was negative and then I took another at 7 weeks and it was positive.