What Causes Tingling Sensation In Vagina After Undergoing Spinal Surgery?

I have a hiernated disc at L4 and at L5. I had surgery at L% but it rehiernated. Before surgery I had lost all sensation in my vaginal area. Now I can feel it. However I dont know if it is normal. It has been 6 yrs since surgery. It feels twingly and causes urinary problems at times. However during my period I am fine. Any ideas/