You are the one who knows your body. You know if there's something wrong. It's so frustrating when doctors invalidate your experience!

I wish they would say "I don't know how to fix it" instead of acting like it's not real because they don't have a name for it or don't recognize the symptoms.

Good luck to you! I agree with the advice to keep trying. You definitely don't have to worry about them feeling like you're wasting their time. It's their job to examine you and look for a solution. You have a right to keep asking until you get answers!