Hello I Need A Genetic Counseller....my Wife Is Pregnant For

hello i need a genetic counseller....my wife is pregnant for the first time..its 15.4 weeks...we have done her duel markers and NT scan ...reports attached.doctors here adviced amniocentesis for which i am ready..i want to know if i should continue pregnancy after amnio reports come negative for downs...is high levels of free b hcg an indicator of any other disease?