Could the birth control mirena (levonorgestrel) give you a false negative result on a urine test? i already have a toddler that i conceived on birth control and im afraid it has happened again.

I'm : I'm not quite sure i understand your question, but i will try to answer as best as i can. Mirena (levonorgestrel) is a 5 year iud that is coated with a small amount of hormone. Mirena (levonorgestrel) is about 99% effective in preventing pregnancy. This means you have about a 1% chance of getting pregnant. If your urine pregnancy test is negative, then it's likely correct. If you want to be sure you can request a blood test from your doctor. Good luck.

Repeat the test: A pregnancy test is a visual test and requires enough HCG in the urine to change the color strip enough so it can be read visually. This hormone rises rapidly after conception and is excreted in the urine. If you believe your self to be pregnant, repeat the test in a few days and be sure to use a concentrated urine specimen, such as a first voided urine in the morning.