Hi M Sanjana I Had Sex 28 Feb To 4

hi m sanjana i had sex 28 feb to 4 march. Last month on 10th of march i had only two three drops of blood in my period time.but this i did not have period only white liquid came out through vagina. i used pregnency test it was positive. so please Dr. tell me how so i use unwanted kit. Would it be safe. will it work.
thankyou