My hair is sort of in this stage as well. It is REALLY annoying. Even with products, it still curls all over. I think I am going to need to learn better about styling hair that is in mid growth phase.
However, to the op, there is hope. I went through this last time I grew my hair out and it did get better as it became long. Believe me, if my hair can improve, I have to imagine yours will be fine.
For now, you can try using some product to calm it. My hair tends to get dry and becomes curly as a result. Moisturizing your hair can be a big improvement. You can try a straighter, but be careful. They have a tendency to damage your hair and ruin your future hair growth. But if used right, you can minimize the damage. If you go down this route, get a more expensive brand with ceramic plates. And always use protective hair serum while straightening.