Talk to Gynecologist on Pregnancy Problem With Doen Syndrome

Sir/Madam I have done my 2nd marriage with a divorced women, after 8 years of 1st marriage due to no child from 1st wife. My 2nd wife already have 2 child from his 1st marriage & both are normal in life & also normal in deliveries. Al Hamdo LILLAH God Gifted me with a baby boy, which is also a normal in life and normal delivery. After my son God give me a baby girl, but she is down syndrome, we are properly caring her. After this baby girl, we have 2 attempts, but twice has been abortion due to both time after 10 to 13 week, no improvement in growth. 8 months passed to last properly DNC, now we have one more positive just 2 weeks passed. I have threatened because of growth and down syndrome. We have properly check up with gynecologist in every time and every month. Can we have chance to again a down syndrome or not...? I am too much worried about this. Please advise me in this regards.