Since you've been ironing your hair and applying thermal heat for so long, it's hard to know exactly what your natural curl type is.

Typically, frequent heat application results in damage that results in a relaxed curl pattern. That could also explain your hair being dry.
3b/c?

Ringlet Fandango! ... Where curly ideas roam free

* 2 blogs this week: Pictures of My (Sorta) Big Chop! AND Turn a Nightmare Product into a Dream* My Albums