Hello Swetha, Thanks for coming to HCM. Pregnancy test use a hormone detection principle to check for pregnancy, and test remains positive for days after miscarriage till the hormone disappears from the body. Please note, unassisted and/or incomplete abortion induced by various methods have risk of several complications and should be avoided. It can affect your ability of having children in future too. If you are not ready for having a child, please consult local gynecologist (if possible, go with your husband), who will examine you for incomplete abortion, check if you are still preganant, and discuss the contraceptive options too. For a married woman of your age, best method is to take oral pills. Please learn about the routine of taking pills and if you miss on taking pills some time. Properly planned contraception will ensure happy stress-free marital life for you. Wish you good health!