Hey doc i had a miscarriage about 6 or 7 months ago since then i havent had my period i take pregnancy test and they come positive.

Hmmm....: Home urine pregnancy tests are very accurate by 3 weeks after sex (a positive test result is accurate by 1.5 weeks after sex, but a negative result may be a false negative if tested too soon after sex). So, a woman with a positive result can recheck it a week later. If still positive, she is pregnant... but if she hasn't had sex after a miscarriage months ago, she needs to see the doctor now.