Hyperthyroidism Pregnancy

So I've made the mistake of reading about thyroid and pregnancy on the internet which left me scared shitless to be frank.

I have hyperthyroidism and cannot take the medications as I'm allergic to key ingredients however I've found with diet and exercise it stays under control and happy.

Currently I'm very early (5 weeks), just had blood samples taken today to track everything including my thyroid levels.

So ladies. Have any of you had hyperthyroidism before becoming pregnant and how did your pregnancies go?