What Causes Recurrent Pain In The Shoulder After An Accident?

HI, there! On January 9,2017 I was in an automobile accident. I was checked out at the hospital and they said I was okay even though I left with my right shoulder hurting and my right leg hurting. I was given ibuprofen. Since then I ve had right shoulder pain that comes and goes depending on the movement. I ve also had pain in my right thigh that just happens when I m walking or running. It kind of feels like a shock and I have to stop and it goes away. It happens several times a day.Sometimes when I fold my leg underneath me it happens and I have to straighten my leg and wait a few moments for it to go away. I m concerned as to what is going on. I currently have no insurance since I just became self employed and divorced and am unable to go to a doctor due to financial constraints. Further information: I am diabetic type 2 and have an underactive thyroid. What can I do to get better?