When We First Check The Pregnency Test Then It Is

when we first check the pregnency test then it is positive nd after taking the Mifegest kit there is no bleeding bt nw the result is negative.... bt periods is not coming nd there is no any kind of bleeding bt she have pain seems before periods .. now we confused what to do now ! her first pregnency test is wrong or last test.... ! we got confused !her 6 weeks are complete !