Weird Things That Make You Orgasm (???)

So, I've actually never orgasmed from sex, even when its by myself. I always get wet, and I even ejaculate occasionally (with my boyfriend). The only times I've ever orgasmed, they're from being really nervous or frustrated (like taking a test abd running out of time, etc. lol). I don't even need to touch myself: my whole body goes into a trance-like state and my vagina starts pulsing like involuntary and rhythmic kegels. It last a minute or two max. Its THE best feeling ever, so I wish I could achieve this through sex.

I googled and it said it might be a way my body is calming me down in stressful situations. I'm also still a little shy and in my own head during sex, so that might be why I can't do it then. It just really sucks, and I want some people to relate to & some advice.

tl;dr: Need some advice to achieve an orgasm through sex!!!!