DON'T put it off ! Get the diagnosis on record ASAP, so you can get this treated ! Don't let the doctors give you the runaround.
Have you had any testing (MRI, Cat Scan) to rule out blood clot or something like that?
My issue is with both legs 5 years now. I was in 'denial' the first 2 years. I regret the fact that I let Dr's give me the runaround and spent thousands of $ on needless testing.
5 months is a long time. You need to get someone to take this seriously. You don't have to have 'all' of the symptoms of RSD.
Please find someone who will get on this NOW.