Sounds like heat damage, with that amount of straightening. You may need to cut some of it off and TLC the rest big time, and refrain from processing. You can tell your hair has potential to be thick and wonderfully curly . I highly suggest the CG method.
CG Birthday: 7/25/11
Type 3a/2c
Dense, Fine in front Coarse in back, Low porosity
Low-Poo: SM Moisture Retention Shampoo
Rinse Out: Tresemme Naturals
Leave In: ^^^^
Stylers: AIF, Natural Silks Curly Gel
*Desert Curly*