In 3rd may my wife give bood test for thaorid and getting report after 7 days, thapede very high TSH 15. Dr. give medicine thmaxine 50mg, then again give test on 2nd july and report shows TSH 11. But when my wife test pregnancy on 7th july it is positive, and we meet gynecologist on 10th july Dr again test some required test and TSH report show 4.2 , Dr continue medicine 50mg. But i am confused regarding TSH report 2nd july 11 but 10 july 4.2 , what happened...Please suggest me for better. Thanx.