Elevated TSH and Pregnancy

I am 7 weeks pregnant and never been diagnosed with hypothyroidism. I recently had a blood test and my TSH was 5.9, my T4 was 1.2. My OB/GYN sent me a letter with this info and said I needed to see my family doctor regarding this. Should I be concerned? Do TSH levels normally rise during pregnancy? This will be my 2nd child and I don't remember having this test done the first time.

Thank you!

[kitty9309]

A high TSH during pregnancy needs to be treated. Desirable levels are under 2.5.

Levels may rise during pregnancy if you are hypothyroid- looks like this may be the case.

TSH is not always a routine test, or you have had it done in the past and it was normal.

Call the doctor as soon as you can. Treatment is safe and a good idea, especially when pregnant. The normal T4 is a good sign.