Problems in the bedroom??

So I’ve been with my girlfriend for coming up to a year now and I’ve never had an orgasm and only been eaten out twice.. I want to say something to her but don’t know how to approach the situation. We’re only 16 and this is her first big relationship and experience having sexual interactions so I don’t want to hurt her feelings. It’s not that I don’t trust her it’s just that I feel bad for not being as into the sex as she is. Help!!