new hair growth thicker, curlier, unruly?

I have been growing my hair out and it is now down to about the middle of my back.  It has always been fine, and straight at the top and a little wavy at the ends.  On humid days I would get a few ringlets here and there but always staight at the roots.

 

I have been eating a healthy diet and don't know if this is what made a difference or not, but my hair has been growing in really thick, curly at the roots, and very unruly.  It is hard to even make a part.  It is also very frizzy.    I have always let my hair air dry.  If anyone can offer any advice on how to tame my roots or if they have heard of this happening before, please pass the info on to me.    I have added flax seed oil to my diet.  Would that make a difference??

 

Thanks!!