Question About The Card

So here is my question, i have hereditary RA (Rheumatoid Arthritis) i got it from my mom. Now i have never personally been to see a Dr. about this just our fam. physician and even then i wouldnt complain much becuase i thought it was the lack of eating, when i turned 16 i would get these really horrible pains in my hands and then my legs it would feel like something was chewing at the muscle in my leg and my femur felt like it was FIRE, and the pains get really bad in the winter time, now to deal with the mild pain i would either take some advil like my mom did, but to deal with the more serious ones my mom would just give me one of her pills and it was good enough to help me through out the day. Now since i started to smoke weed heavly i dont have these pains through out the day, i find that if i smoke about 1g every night and then go to sleep, i wake up feeling great in the morning and amazing through out the day, now the feeling last for about 2 days and then if i stop smoking its back on the advil or mystery pills, i prefer the weed. Now since i dont really have any RA related Dr. Visists would it be hard for me to get the card or do i have the same likely hood as everyone else?