About 2 months ago I was diagnosed with hyperthyroidsim. My husband and I recently decided we wanted to start trying for a baby. I tried taking Tapazole as a treatment, but kept having a reaction to the medication, come to find out I can't take PTU either if I'm reacting to Tapazole negatively. Another option for treatment would be to do the radioactive iodine, which I have scheduled August 4th at UCLA. However, I was reviewing my labs and noticed that my T4 was at 1.6... within normal range this time. My TSH was <.02 which is extremely below normal range. My concern is that I'm going to permanantly correct a problem that may correct itself. I was on birth control for about 6 years and stopped taking it in November 2008. I can't help but wonder if this hyperthyroidism was really my hormones attempting to level out or if it's normal for TSH and T4 levels to drastically fluxuate while untreated. If I choose not to treat my hyperthyroidism now, will it be a struggle to become pregnant or carry a pregnancy full term? Will I be causing harm to myself (like provoking CHF)? Or is this something that I absolutely should do before having children? Anyone been where I'm at now? If so, any advice?