I need help with an orgasm!!

My SO and I have a lot of sex and I have still yet to have the big "O". Like it's great like really great, but literally nothing happens. I make him cum like 3-4 times every time we do it. I feel like I make him feel bad or self conscious because I don't do the same. I want to squirt for him. I need tips, tricks, or positions that will help me have an orgasm.