Hello, I have gone through your query and understood the concern. Since you are having late first trimester abortions, infections, genetic defects comprise the most important causes. Anatomical causes are almost ruled out since you have had normal pregnancies earlier. I would recommend some gap before you try for your next pregnancy. Meanwhile, please get properly evaluated with tests for TORCH titres, urinalysis, sonogram and blood counts. If the products of conception were analyzed, that would give a better insight into the cause. Hope this helps.