Please help by advising right. Seeds.

Please advise WHICH SPECIALIST can treat my issue than asking me to come online . Because I know some tests are essential with physical examination to administrate the treatment. I thought and diagnosed for cubital tunnel syndrome and gabapanitine medicine prescribed . Taking the same since 2 years. My nerve velocity and ultrasound scan and x-ray was normal. Today I observed clearly actual issue is different. When I was outside house I just lift my head up suddenly to see the heavy rain. Immediately I experienced server pain and something like electric power passed shoulder blade to little and middle fingers of both hand. THIS IS what pain I am bearing since last two years. I am aged 57, weight 73 -75 KGS, walking 8 to 9 k steps everyday, strict on my diet, pure veg, drinking 4 to 5 liters water a day and on medicine Tab bisoheart 2.5 mg 1 a day, tab Aztolet 10 mg 1 a day, trigabapantine 100 , 1 a day. Also having occasional IBS C. But managed with flax seeds .