Goal for pregnancy is usually high normal Free T4. The TSH may be slow to rise in the initial months after treatment for Graves. The key is to follow levels very closely now and during pregnancy and use minimal antithyroid drug dose (current recommendation is to change to methimazole after first trimester).
Maca can help you to get pregnant, but but can also cause thyroid goiders or nodules. DHEA. Stacked with Bulgarian Tribulus I am told can also help you get pregnant. But the combination may increase your muscle gain and can increase weight a small amount.