16years and never had a bfp?

I'm 33years old and have never been pregnant and have had long-term relationships in this time frame and never used protection. My doctor says it takes time and nothing is wrong with me. No, I've never seen a specialist and am regular on my cycles. What does this sound like to you? Maybe blocked tubes? I also feel as if my doctor doesn't care about my concern that I've yet to become pregnant 😞😞😞