Orgasms 💦

So me and my SO have been sexually active for the past few months and the second or third last time we really got into it he came and later he asked me when I finished except I don't think I did?... I mean he thought so because I got so loud and so wet but I don't think I did? So I guess what I'm asking is how do you know your Orgasmed? is there a feeling or what? also I masturbate and I feel like I may orgasm from that but it's never really mind blowing like people make it sound... Also tip to help me orgasm would be great too! thanks ladies!!