Are you taking off too steep? If so your plane may want to act as a sail (grabbing all the wind) which would mean you're having to compensate more until you level out.

Another thing... I had someone "adjust my radio" prior to my taking solo control just to be on the safe side. The settings entered either didn't save properly or the person had (like me) no idea what they were doing. Prior to a "proper" dial-in my take-offs were white knuckle rides until I was 30' in the air.