This is my first post here.

I am in my early 20s, and until this week I had never orgasmed before. I am a virgin by choice, as I have never had any real desire to have sex with another person whether male or female (I consider myself myself mostly asexual). I do believe I have a slightly above-average sex drive, however, because I have always masturbated a lot (usually at least once a day). I would do this even though I never reached
orgasm ever!
This weekend, though, I must have accidentally learned some sort of new trick or something, because I did have a clitoral orgasm through digital stimulation and it felt absolutely amazing, 100x better than any plateau-phase pleasure I was having before. I managed to have three more orgasms that day, and then two more the next day, giving a total of six orgasms in that period. I am not depressed by any means but there was a big improvement in my overall mood; I felt like the guy on the Enzyte commercials.
For the past two days, however, I've been unable to climax again, even though I've been trying. I think this may be because my clitoral region is a bit sore from masturbating vigorously so much. I know this shouldn't concern me too much and that I should just "cool off" for a few days, but part of me is worried that I will become anorgasmic again. Before this weekend that prospect didn't bother me at all (I considered the plateu phase to be adequate), but now that I have experienced the euphoric pleasure of the orgasm I can't stand the thought of potentially not being able to climax again.
Is this a valid concern? That is, is it possible for someone to live their lives up to a certain point without having experienced an orgasm, then go through a brief, intensely orgasmic period, and then lose the ability to climax again? I have also (in the past and recently) come very close to achieving a vaginal orgasm - is this something I can "work on" as well? I just feel physically and mentally frustrated that I haven't been able to climax again... I come have close to that point of inevitability but then just can't go all the way for some reason, and then I get (the female equivalent of) blue balls.
Also I have found that while I am being stimulated vaginally, clitoral stimulation does nothing for me (it has little to no feeling at all), and while I am being stimulated clitorally, vaginal stimulation does not really do anything. I can either have one or the other, and it takes me a minute to switch between the two if I so choose. Is this normal? Is it possible to train myself to experience pleasure from both of these areas simultaneously?
Sorry for this long post, and I thank anyone for advice they might offer.