When I first started having sex, I did not get any orgasims...Not even clitoral. I could get myself off no prob but when it came to the guy, I found that I have to have that connection with the person. My boyfriend and I have been friends for a while, and we ended up hooking up casually a few times before we were "offical", and it was not stimulating at all...But now that we are together, and have made that special bond, sex is f-n amazing!!!!!
Clitoral stimulation is easy to do, and you're right...It is hard to get another one right after...It all depends on the situation I find. Sometimes once is all I can get, while other times, I can get off twice without any effort...
Plus...If all you are thinking during sex is "i wanna get another orgasm" and "stressing" about it...Then your mind set is not in the right place which will definitely prevent it from happening