Tips for orgasming

I’ve been with my boyfriend for over two years and I’ve never had an orgasm :( everything’s totally fine as in it always feels good etc but no matter how hard we try it never happens. He’s the only person I’ve slept with so I’ve never had an orgasm and don’t even know what it’s meant to feel like, but my clit always seems to get TOO sensitive before anything happens and I feel like it’s gone past the point where it feels really nice and could potentially lead to an orgasm. And I know your clit is meant to become more sensitive after orgasming so I wondered whether I’d orgasmed without realising, but people also say that if you have to question it then you haven’t had an orgasm. So just wondering if anyone has any tips or if anyone else has experienced this but have eventually been able to have one? Or if we should just keep going even though my clit feels too sensitive? Like is that normal and what is meant to lead to an orgasm?