Talk to Rheumatologist on Varicose Vein Of Wrist Joint

I had a severe wrist joint pain since 3 weeks, in starting I can't even tilt my hand nor write anything on paper, gripping pen is so difficult for me and my writing becomes shaky. I didn't understand whats the actual problem. I go to orthopedic, take tablets, wear wrist brace, apply voltral emulgel, but no improvement. After sometime I notice that my one hand is differ from other and little swell in center of wrist joint. And one vein is above round bone of wrist joint but other's hand vein is normal. Suggest me which doctor I should consult, what is the reason behind this. I am having exams next week, and I am unable to write. Pls tell me what to do.