I have just been diagnosed with Hyperthyroidism (overactive thyroid) and have had different opinions from different DRs in regards to treatment. One DR has suggested that is caused by the pregnancy hormones due to no previous history and that it should settle itself out in the second trimester. Another DR has recommended I start medication ASAP. Has anyone else experienced this in pregnancy? Did you require treatment or did it sort itself out as the pregnancy progressed. Any information about Hyperthyroidism in pregnancy would be appreciated as I haven't been too informed.