Pregnancy / cancer

Sydney

We have been trying to get pregnant for almost year now I am scared that can’t have children because when I was 17 I got diagnosed with stage four thyroid cancer but had all my surgery then some and had radiation , to kill the rest of it now I am almost 27 and we want kids but we have been trying the only thing is that I have state insurance it doesn’t cover my medicine that need to take for having no thyroid or back up thyroid is what the doctors told me so now I feel confused and my body is acting weird because haven’t been on it. What should I do ? Haven’t told my partner or parents.