Can you provide any pics, maybe that would help. It's not unusual to have combination hair (as you can see by my nickname...), some people can have up to 3 types of curls. But if you're using shampoo your hair is probably not showing its true curl, perhaps you should try the CG or shampoo-less routine (check out the forum of that name).
2A/3A, medium length, layered, colored dark/medium ash blonde - "CGer" since April '02.
"Converting the 'curlskeptics' one curly head at a time..." HWHC