Posted by on April 21, 19100 at 15:29:54:
In Reply to: underactive thyroid- doctor please answer posted by anonymous on April 21, 19100 at 00:57:44:
Dear "Anonomous",
Speak to your doctor right away. Don't wait until after the weekend. Thyroid hormone is carried in the bloodstream on TBG (thyroid binding globulin) protein. Only free thyroid hormone can do its job, the hormone stuck to the protein is not active. Estrogen (estrace) increases the amount of TBG in your blood. This inactivates more of your Synthroid than normal. In effect... you probably need more Synthroid. Speak to your doctor. The dose can be easily changed. Don't change it yourself without speaking to your doctor.
Dr. Barad
: I have been diagnosed as being borderline hypothyroid since i first started menstruating but no doctor would ever treat me until I first went to an RE at age 42. Until then I was told it wasn't serious enough to treat. After I went on a low dose of synthroid I felt good for the first time in my life. My levels remained unchanged through 4 years of IVF treatments. After being on Lupron for two weeks and starting to build my lining with estrace I suddenly felt exhausted and my hypothyroid symptoms came back. After testing we found my TSH levels had gone up 7 points. Should I wait to continue the DE cycle? I'm concerned that the levels could affect implantation or cause an early miscarriage as this happened to my closest friend twice before her Hashimoto's thyroiditis was diagnosed and her TSH was even lower than mine. The donor has already started her Lupron and may have even started her stimulating drugs. What should I do? I can't afford another cycle after this one.