I am going through this right now. However I I developed a thyroid problem (under-active) before I got pregnant. It is really important you see your doctor regularly and get blood work done to check your levels too. Make sure you take your medication everyday and take it on an empty stomach. Has your doctor mentioned you seeing a endocrinologist? I have to see him every month and he specialized in thyroid problems especially during pregnancy. I am sure you will be fine jus make sure you take your medication and follow up with you doctor. Also express any concerns you have with your doctor too.