I remember having the same worries after I’d gone through all of the testing and was awaiting the results. I needed a definitive diagnosis very badly, but I was terrified that the therapist would tell me that there was nothing wrong, it was all in my head, etc. It sounds irrational now, but it reflected my low-self esteem. Now I’d say trust your knowledge of yourself. If you know something is not right, get it checked out and find the answer. It may not be exactly the answer you are looking for, but it’s better than staying in a place of anxiety and uncertainty.