Keep going back until someone listens to you!
A few years ago I wasn't feeling well, went to docs, diagnosed with low sodium....had to add salt to everything for a fortnight. No difference, different doc diagnosed that I wasn't breathing correctly!!! Needless to say that was a load of cr*p and after getting the 3rd or 4th doctors appointment I saw a specialist and was diagnosed with MS! A bit different to what I had been told!
What I'm trying to say is, YOU know when you're not feeling right and it's up to YOU to push for the correct diagnosis!
Good luck ;-)