My wife is 7 weeks pregnant. We have done all blood test. TSH value is :- 3.5.Dr. Has told that it is slightly high. It should be below 2.5.But in thyroid report it shows normal range is around 4.5 - 5. Another Dr. Whom we prescribed this blood reports did not prescribed" thyroxine". But the Dr. Whom we are consulted for pregnancy has prescribed" thyroxine"daily in morning empty stomach. Kindly tell me what would be normal range for TSH for my wife who is pregnant? My wife do not have any thyroid issue before pregnancy. Her value before pregnancy was TSH :- 1. 7.Is this medicine normal for our baby? Thanks in advance for answer. Please guide properly. Why every Dr. Have different point of view?