hi i am 21 years old and have had my iud for two years now and have never missed a peiod until last month and this month only had brown spotting and iv been having pain in my breast and back i have also been sleeping alot but i have been losing whight i took a hp test and it came back neg could i be prego?

If the HPT was taken correctly, it would give you a pretty accurate result.

IUD's can cause hormonal symptoms like you've described. Call your doctor to be safe and get their thoughts on it.