test also known as mantoux test
or PPD test
7 mm is not normal result ,u must do it again and if same result is there then u should go for other test
less then 5 mm is negative and more then 10mm is reactive
u have intermediate result it may be due to
-recent contact of tb pt
so dont take it as negative and be concern ,but dont be scare .
ya ,u can do sex with this result .