Ive been getting headaches nonstop for almost a yr,mri's are normal, my neighbor suggested using 1 pillow and not 2 cause my neck was hurting too,now that i did that my neck and head are healing up, will it totally heal up after a while? its better?

Your normal brain MRI &improvement in your symptoms are reassuring and suggest to me that you're on the right track in getting rid of the second pillow which probably did cause musculoskeletal neck discomfort and muscle contraction headaches. Pillows that are too high do add much tension to the neck muscles and significant headaches. Since damage doesn't occur your symptoms should resolve fully