Gp or endocrinologist for hypothyroidism

Charlie • Avoiding pregnancy tracking my cycle
I was diagnosed with hypothyroidism in oct 2015, I have only had my blood drawn that once when I was originally tested and need to have my bloods redone, I'm on 50mcg of levothyroxine and I was wondering for those that also suffer do you see your go for checks or an endo? I know nothing about it as I just don't understand all the tsh and t3 levels I really need to learn about it as I want to get pregnant and need to be up to speed with my body