Valerie, don't be disappointed honey, you have one too, believe me.
Some girls have big ones and some girls has small ones.
Some girls cis or trans likes direct stimulation, and others the indirect stimulation.
You could try to cross your legs and squeeze, your labia will be pushed a little more to your body and that can give the feeling where you were looking for.
The only thing you don't got to do is focussing on orgasm, it won't work, than it is like a job what has to be done.
Just enjoy the feeling when you're in the right mood.
You can use ladies toys if you like that, but make a discovery journey to your own body, just to see what you like.
Sometimes it's a bit searching in the dark but the main issue is....enjoy.
See it in another way, when you buy a new car or something you have to get use to it, now you have a brandnew vagina, it sometimes need a little time to get use to it.
Good luck with your exploring journey and I hope one day you can write you're post orgasm.
hugs and kisses
Annette