Is it normal to have different hair types all around your hair?
It seems like the top of my hair and the middle are 3b but the back and sides are 4c.
Yes, it is normal to have different textures or curls in your hair. I have 3a, 3b, and 3c curls. Go search two articles called:"Do you have multiple curl personalities?" and "But I have more than one curl pattern..." on NaturallyCurly.com.