I was a missionary in Brazil and we walked and walked and walked. Big surprise, my feet started to hurt. I did the best I could, but after months, I could hardly walk anymore. I naturally tried to compensate, which only messed up my ankles, then my calves, then my knees, then my thighs, then my hips---you get the idea. I finally decided it was time to go home when I threw out my back, too. I was a MESS.
But when I got back to the States and had a podiatrist look at me, she couldn't find anything wrong at all. I went to several different doctors. I went to therapists, etc. And no one could find out what made me hurt so bad that I could hardly walk.
Finally, I just gave up and went back to college. But I could hardly walk across campus without breaking into tears. And I'm pretty tough! (years later, I was reprimanded by the anesthesiologist for being too stoic through my c-section, because he couldn't tell if he needed to do anything for me). I went to one last podiatrist, who happened to be a member of my church. He alone understood what it meant that they sent me home early. He knew that was not a decision taken lightly. But still, he couldn't find anything wrong. I started sobbing right there. Poor guy! He promised me that he would figure it out.
And he did.
Pain tolerance and pain threshold are very different things, IMO. I have a very low pain threshold now, because I have fibromyalgia. Sometimes even a light touch hurts me. But I have a very high pain tolerance, since I never have a pain-free day. I put up with it.
I have had an experience with doctors, both my own and my kids', that I think is applicable to your situation, although it's a different topic. I am not one of those moms who takes their kids to the doctor all the time. I studied biology in college, and I know a whole lot about disease and immune response and treating injuries. So when I DO show up at the doctor's office with a concern, you'd better believe I'm very worried! I've had doctors talk to me patronizingly, immediately assuming that I'm a paranoid mom whose kid just has the sniffles or a scrape. And when you think about it, the see more of the paranoid kind than my kind of mom every day, even if it's just because they come in more often! It's hard to convince them that I'm not like those other moms who freak about everything.
I've had to work hard to change their minds about me, and I've learned through trial and error how to do that. I learned not to be shy. Doctors only know what you tell them. I've learned to use big words, dusting off my college anatomy vocabulary. The moment they sense that you know what you're talking about, that you've done some research, etc., the entire tone of the visit changes.
That might help you in your visit. If you've done some research into what could be going on with you, let the doctor know.
Tell your doctor what you said here in this post. Tell him you're not a woos. That you've cut off your finger and didn't cry, but this pain is just killing you. Tell him that it's really affecting your life, and you've just GOT to figure out what is going on!
For me, pain meds work wonderfully! I had 3 c-sections, and Tylenol worked just fine. But Tylenol does nothing for my fibromyalgia pain. Do you find that to be true of your pain? That is another thing your doctor should listen to.
Be firm, don't hold back. Tell the doctor everyhting! When I was young, I held doctors in such respect that I didn't realize they're just like you and me. They're not mind-readers. You have to TELL them every little thing.
I hope your doctor is one who will really listen. If not, ask around for one who will. I actually asked about that here on this site and found a really great doctor, who almost took TOO much interest in my life (you should have seen the look on his face when I told him my abusive husband had been removed from our home by the police! He looked like my best friend on my graduation day, grinnin' from ear to ear. The point is that he listened and remembered all about my stupid husband, and gave me the tools to deal with him)
And one final word for you. Fibromyalgia pain is not "real," in the sense that there is nothing wrong. It's basically just hyper active nerves that are screaming OUCH for no reason. But whether the pain is caused by actual tissue damage (like a cut) or if it's this sort of "phantom" pain like fibromyalgia, IT'S REAL. It has all the effects of real pain. So even if there's nothing physically wrong with you that is causing your pain, even if it IS "in your head," you deserve to be treated with respect and not dismissed. You deserve a physician who will figure out what is going on and figure out how to help you.
I have gone on and on and on! Wow! I'm sorry or that, but your post hits awfully close to home for me. I hope your visit goes well. Be strong, speak up, be heard.