TSH gone from too high to too low in 4 weeks

[Sam8103]

Any thyroid mums out there?

I had my TSH levels checked a month ago when I was 6 weeks pregnant and they were 2.09. I had my thyroxine dose increased from 100mg to 125mg.

Because I'm seeing the endocrinologist tomorrow, I had a blood test and have just had the results back - I've dropped to 0.09.

I'm really worried about this, can this plunge from hypo to hyper hurt the baby?

Obviously this will be the focus of my appointment with the endocrinologist tomorrow but wondered if anyone has any wisdom to offer today?

My understanding is that slightly hyper is better for baby than slightly hypo.

Mine is similar after being on a higher dose than normal throughout pregnancy, so I've been advised to start alternating (125/150) for the next four weeks. I'm certainly not worried about being slightly overmedicated, but I've not been sleeping well.