Veins

I’m 24 and have varicose veins started when I was 18 looked like a bite mark on my inner thigh and when it didn’t disappear I went to the doctors because of my age they didn’t take much notice give much advice or help in anyway.6 years on my thighs are covered with large bulging veins they never go down and as of lately I’m having pains around my knees and inner thighs and have noticed the veins on my calves are now beginning to stick out anyone else have similar problems advice would be grateful ??