Hi Paige,
It is in the nature of loving parents that they will always think of you as a little cherub, regardless of where you are in life, and will always make their concerns more than obvious to you, and make you feel as though you're still aged 6.
That being said, they are now being confronted with something that is, to them, on the complete outer of the norm and outside of their experience. Reading between the lines, their concern for you is definitely there, and to me, it just seems that they want to be sure that this is absolutely the best way forward for you.
Give them time, do your best not to spite them, live well and show them that you will thrive. If yiu do that, it will make acceptance a lot easier for them. Your parents deep fear for you is that you may end up being a caricature of a person, fit only for making appearances on Jerry Springer.