Height difference becoming spoilsport in our s*x life

I’m 5’2ft & my fiancé is 6’2 Emotionally we’re solid but physically it’s frustrating . Whenever we try new positions it just doesn’t work there’s a lot of adjusting, awkward angles, pillows everywhere in the end we give up switch back to missionary all the time. It’s not bad s*x but repetitive.

My fiancé keeps telling me it doesn’t bother him that he’s satisfied which makes me feel selfish for wanting more. I don’t want to hurt his feelings or make him feel inadequate but at the same time I don’t think it’s fair to ignore my own sexual needs and frustrations either.

What worries me is that we’re heading towards marriage and this feels like such a small, silly issue to complain about yet it keeps resurfacing in my mind. S*x might not be everything but it’s still an important part of intimacy and I don’t want resentment or dissatisfaction quietly building up over time