Ay, napakahirap yan! I don't personally have hyperthyroidism pero one of my mum friends was diagnosed during pregnancy at it was stressful talaga, kailangan niya ng regular monitoring with her OB kasi it can affect baby. Definitely talk to your doctor about this para ma-manage properly, lalo na kung preggy ka or planning to get preggy, kasi may meds na safe para sa baby and some na hindi, better to have a plan with your OB from the start! Sana may iba pang moms sa community na may experience to share, pero medical stuff like this talaga kailangan ng expert guidance, hindi lang taya-taya.