I Am 1yr. Post Op From A 4 Level Anterior

I am 1yr. Post op from a 4 level anterior fusion, c3 c7 and 5 months post op from a posterior c4 T2 foraminotomy and laminotomy. I currently have elected to hold off on surgery for L4 - S2 until I am stronger.
My issue is that a lot of days I have my tongue go numb and/or tingly and a headache over and below my right eye as well as the right occipital quadrant. Any ideas which direction I should look for answers as to why?