Thyroid and pregnancy

Jasmine
I have hyperthyroid and was diagnosed with graves disease last year. Im not on any medication anymore cause doctors say I don't need it right now. Now I'm 16 weeks pregnant and I have been having the worst chest pains, it feels like someone is squeezing my heart till its about to explode! Doctors keep telling me I'm fine and there is nothing they can do. Anyone else dealing with thyroid or anything else while pregnant??