Hi.. I Am A 27 Yrs Old Female. I Have

Hi.. I am a 27 yrs old female. I have been suggested thyropace by my doctor. I have it in the morning before breakfast but experience stomach pain for approximately two hours after that. It some times gets severe. Is there any other time that I can have this medicine? I do not want to stop the medicine as I have a family history of thyroid and I am planning to conceive in near future.