Thanks for using Healthcaremagic,
You are known case of Graves disease and taking antithyroid therapy(Carbimazole
Th\You should understand miscarriage
is possible due to various causes and sometime it may not be possible to pinpoint.
If you are planning pregnancy antithyroid drugs
must be given the choice is PTU( propylthiouracil
) due to lower teratogenic effects and once first 3 months pass it may again be shifted to Carbimazole or Methimazole
You should continue to have medical check up and follow with your Gynecologist.
It is certainly possible please do not worry and these drugs can be continued during lactation.
Hope this helps
Dr. Akhilesh Dubey M.D