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My RE wanted my TSH below 2 and in fact I didn't end up pregnant until it was below 1. I would definitely suggest having it retested and if it's borderline consider meds to get it to happy pregnancy levels.

It’s SO irritating. I hate lab ranges. Especially because they include a whole bunch of sick people!!

My PCP said up to 4 was normal, but since we were TTC she wanted me under 2.

You might want to read up on subclinical hypothyroidism.

I had to find a doctor that leans sort of toward functional medicine to treat mine. Mine had always been around 3 or 4 (which most considered "normal").

I'm not sure if it was a big part of the problem or not...but after getting it and a couple other things under control, I'm halfway through a pregnancy with no issues so far.

It's also important to find a doctor who will test you REGULARLY during pregnancy if you're on thyroid medication. Most doctors might test once a trimester. But thyroid levels can change rapidly in pregnancy.

My doctor wanted me at or below 2 when TTC, closer to 1 in the first trimester, and now between 1 and 1.5 in the second.

But it's also important to look at more than just TSH.

A lot of people in one of my infertility groups reference Stop the Thyroid Maddness (there's a website, and I think a Facebook group). I can only handle so many groups, so I haven't ventured there.

Something else to keep in mind...my levels went completely wonky after my last loss (I think TSH was above 4). I know you've had a lot of losses, so that could be part of what's happening. I needed to increase my dose of thyroid meds for a few months before it leveled out on it's own.

I recently met with our RE and they were discussing prior to getting my lap results that they really want the TSH on the low end of the range. So even if it was normal they would likely put me on a low dose medication to reduce it further. They were citing recent studies and I just trust in them. Good luck!

@mrskansas: my value was 5.81 during 1st tri and the doc put me on supplements, stating that normal adults 20 yo or older should be between .40 and 4.50.

1st tri: .26-2.66
2nd tri: .55-2.73
3rd tri:.43-2.91

The supplements brought my levels to 1.84 which is within the normal range, as presented by my doctor.

She also said that Hyperthyroidism can cause a low IQ and that treating it during pregnancy has shown great results.