Can’t orgasm???

Hey everyone 👋🏼

I’m 19 years old and have been sexually active with my long term partner since I was 14... I never really had an interest in playing with myself - I tried once or twice when I was 13-14 but could never really turn myself on, let alone have an orgasm and I always thought there was something wrong with me because of this. My partner and I have both only ever slept with each other and I’ve only managed to have an orgasm (I think) 4 times in these last 5 and a bit years (always from fingering, never from clit stimulation or sex). As of late I’ve become a lot more sexually curious - trying new things and actively seeking out ways to pleasure myself (with limited success) so I bought myself a vibrator which I’ve inly just managed to use for the first time tonight. Anyway, I was using it on my clit and it felt really good and all of my muscles (especially around my bum for some reason 😳) got a really warm sensation, shortly followed by random muscle tightening... I kept trying to relax but my body just kept tensing up uncontrollably, it felt amazing but it almost felt “too good” if that makes sense? I got the built up but never the climax and I feel extremely disappointed... no matter how much I kept trying to relax or try again I just couldn’t seem to get there... it all felt too much. Is that normal? Is there something wrong with me? It felt so different and much more intense than when (I thought) I orgasmed with my partner and now I’m questioning whether I’ve even had an orgasm 🤦🏼‍♀️ any tips or advice? I just want to experience it 😩 TIA XX