Hi there, SL796, and welcome to Scarleteen.
I do have a few thoughts that might be helpful. First off, we do have an article with some masturbation basics that may be worth a read:
Going Solo: The Basics of Masturbation.
I have a few questions to ask, too, so we can have a better understanding of what you're experiencing. When you masturbate, and when you're being sexual with your boyfriend, are you doing those things when you're already feeling aroused? I ask because many people find that the sort of touch that feels great during arousal often feels painful, mildly annoying, or like not much at all when they aren't feeling particularly aroused, or are feeling stress or pressure in a sexual situation. If your partner touching your clitoris isn't feeling great, are there other types of sexual or physical intimacy that do feel good?