I am trying to conceive and during routine tests my TSH came back at 5.8 with T4 of 11. My GP wanted to leave it 6 weeks and retest and when we did my TSH was 4.6 and my T4 was 12. My TPO antibodies were 113.5 so she agreed to give me 50mcg of levothyroxine. I have now been on this for 8 weeks and had my blood tested on Monday. My TSH has rise to 8.7 and T4 is 12!!! Any ideas why TSH would rise so sharply on levothyroxine?
Any help would be greatly appreciated!