depression and IVF

We've got our next fertility appointment on the 24th of Feb sand if we aren't pregnant by then they are referring us for IVF because we've been trying for 3 years and there's no medical reason why we haven't conceived yet, especially while I've been pregnant twice before this 3 years even though they both ended in MC. I'm quite certain that I've got a mild depression and I was wondering if I go to the doctors about it would they not let us go forward for IVF? I know IVF itself can take a massive toll without being depressed beforehand. Thank you in advance for any help or advice