Hello, I Am Concerned With A Possible Pregnancy. I Am

Hello, I am concerned with a possible pregnancy. I am usuing a Mirena ID I have all of the symptoms of pregnancy, weight gain, sore nipples, etc. I however have had a negative home test and a negative urine test at the Doctors, even so we did a blood test also. The Doc prescribed prenatal vitamins.

How likely is it that I'm pregnant