I'm sorry I misread the timing of your previous posts! You'd think my giant glasses were enough to keep my eyes working, and yet.
Per the upcoming appointment, I'm happy to help you make a plan so you feel better walking into it. For instance, it might work best for you to make a list of your concerns you can give to the doctor first, so that you feel less pressure about having to say it all right from the start. Too, if the anxiety medication you are using is one meant for use to limit or prevent anxiety, you may find taking that medication before your appointment helps you out. Too, you also can let the doctor know some of what you're letting me know here: that you struggle with talking about all of this, that you feel nervous and worried. That way, they can approach you as a patient with that in mind.
In terms of how it's been with your partner, I think one thing to know is that sex with partners is always some degree of hit or miss, and by all means, sometimes we're not going to be able to get it right, or have super-amazing experiences together. It's a lot like conversations: sometimes we may have amazing conversations with someone, and really connect, but even with the same person around the same time, may have times where not only are the conversations kind of whatever, but we may struggle with connecting.
I'd also strongly suggest you separate pleasure from orgasm. In other words, people can and do experience pleasure sexually with or without orgasm. If and when someone doesn't get off, that doesn't mean they have not experienced pleasure. Do you know what I mean?
Too, I wonder -- setting aside the real issue of not really having real time or privacy, which is obviously a pretty big barrier to a lot of this -- if you have been taking a lot of time to explore sex and pleasure together that is not about genitals? Our genitals are only one body part, after all, and they are sensitive parts, but we also have other equally sensitive, receptive parts (like our mouths and hands). A lot of people make sex solely or mostly about genitals, but that's a choice, not a requirement, and a choice that also tends to be really limiting for most people. People who feel very sexually satisfied most often have sexual lives that involve their whole bodies, hearts and minds, rather than only or mostly their genitals. If you haven't really explored a lot of that, not only do I think it would help you, I also think it would take some pressure off it sounds like you're feeling around your genitals.
So, I hear you saying you HAVE experienced sexual pleasure with your clitoris, just in the ways that you like. And that's not just you: that's everybody. By all means, some people are more specific than others -- or are sometimes -- with what does and doesn't feel good, or what does and does not result in orgasm, but I assure you, you aren't alone here. Truly.
I just want to be able to let go and move in any way my body wants without the pleasurable stimulation disappearing.
On this, know that to some degree, that expectation just isn't realistic for anyone. Pleasure being an utter constant with sex, for anyone, with any kind of sex, rather than having peaks and valleys like any other kind of experience, just isn't how it tends to go most of the time. That's not about anyone's body not working right or being broken, it's just about being human, and not a machine where the way we feel is perfectly static.
So, what do you think we can do to help you start thinking about this differently, where you don't think of needing specific things as a negative, or as it being "difficult?" What do you think needs to happen for you to stop worrying about doing it "right" or having a parter do it 'right," and to just be able to enjoy whatever you two are doing at the time, because it feels good -- making adjustments as people do when something isn't so awesome or hurts -- regardless of whether or not orgasm occurs?
Too, what do you think might help you have a little more patience with your learning curves here? Like you said, while you have been sexual together for a while, you rarely have had the chance to have real time and privacy, so by all means, it's going to take longer to figure each other out in this regard. (Or, for that matter, what about considering a move out in the near future?)
One last thing: people experiencing sexual pleasure is primarily about our brains and central nervous systems, not our genitals. Even people without genital sensation can experience sexual pleasure, after all, as can people engaging in kinds of sex that doesn't involve their genitals. Worrying about all of this is a HUGE barrier to pleasure, and the pressures we can put on ourselves are nearly always going to get much more in the way of our sexual satisfaction and enjoyment than anything else. So, whatever you can start doing to try and dial some of this down, take the pressure off, and figure it's all going to be a good thing in time is likely to make a really big difference.