What Norwood am I? Have been told a 3 and estimated from 2500 to 4000 grafts needed? (Photos)

You really cannot say what your Norwood scale is because you may continue to lose your hair and you may end up with a Norwood 6 pattern.  It depends on an examination rather than a photo. A Norwood scale is not a snap shot of what you are now, but your genetic predisposition of what you were born to be.

It is difficult to assess just from photos but you may be closer to an early 4 or 5 pattern.You really need an in-person examination to fully evaluate your pattern and donor supply.It is best to use a number of grafts that will both give you a nice result and conserve your donor supply for future needs.

Of
course it would be best to have an in person evaluation to assess donor density
in addition to evaluating the extent of miniaturization in the front, top and
crown.  We would be better able to give
you an accurate Norwood class plus let you know where you are heading.  During the evaluation, we would establish a
master plan for your future hair needs. 
On the initial visit, we often recommend medication to help you keep the
hair you have.  Best guess - you are a
Norwood 4…almost 5.  

Hi there, thanks for the photos.yes you would need about the same number. you can get a good density and youa re good candidate for fue. best of luck

Judging by your top photo, you would need 3,500 - 4,000 grafts if you are looking to achieve full density.A great first step would be an online consultation. Often you can submit photos to top hair restoration surgeons for a complimentary evaluation. This should help lead you in the right direction. Having multiple consultations with different doctors cannot hurt. 

You appear to have a thinning pattern. If you are under 25 years old, I would try to reverse the thinning with medication only and would not recommend a transplant.