is this normal?

I've been masturbating since I was around 5, when I made up my own technique. I lay on my stomach and place my left hand slightly between my vagina lips. Then, I take my right hand and place it beneath my left hand. I use my right hand to cause my left hand to rub against my vagina. Doing this, I take about a minute to 'finish'. I never actually orgasm, I've never properly orgasmed doing this. I've tried fingering myself but I really don't feel anything. I want to have my first orgasm, but I'm wondering if there is something wrong with my vagina. Is it normal to not orgasm?