the big O

So I've been trying to orgasm for weeks and I don't know if it just takes me a long time or I'm having them and not knowing it. Here's the facts:
• I use both clitoral and penetrational stimulation
• I know I'm hitting the right spots because I just have this movement come over me and it causes me to go faster because it feels nice
• but the thing is that I'm not naturally as moist to begin with (I know a word some people find uncomfortable)
• I feel this pulse down there when I'm done not like a heartbeat pulse I think it's my muscles contracting 
So I wanna know if I'm missing something or doing something wrong or what 
Thank you ❤️