Drs in RI or MA?

Hello I am in need of help finding a DR so I can get a card. I have joint problems and arthritis. Its is awfully painful and well documented. I am only 31. I also have PTSD and insomnia. I have the room to be a care giver and would gladdly help others as well but would need some points in the right direction. I am willing to travle for a DR willing to help me. There are days my knees hurt so much I cant get up if I sit or have to bend at the knees to bend down. I have a little boy to care for so perscription pain medication is generally not what I would like to be on the health risks to them are far worst then MM. Please help if you can...thanks!!