I feel you.
Just showing that what she feels is you pushing on her bladder which makes her feels sensations in her stomach, and being that her bladder is right there above the point of entry, your dikk size plays no part in those sensations.
Its the movement of your strokes, and you can provide that sensation with the smallest of dikks if you know what you're doing.
Place the palm of your dominate hand right below her navel, pressing down on her stomach with slight pressure, place your wet thumb gently on her clit, stimulating it with circular motions, while pointing your dikk upward towards the inside of her stomach, stroking the p*ssy in a confident, firm, rhythmic, steady, consistent, circular motion, along with the nastiest talk you can come up with, and you'll stimulate her mind, clit, and g-spot simultaneously which provides ultimate pleasure to any woman during intercourse.