Colonscopy 6 weeks ago. 2 weeks after noticed pain in lower leg/calf area. Doc said joint. It is NOT in my joint. It is in my calve. It has been a month since I saw him. Has not improved AT ALL. In fact, after being in car all day 4 days ago traveling - it has gotten worse or at least more noticeable. Aleve was managing it. Felt it was OK so I stopped taking it after a few weeks. Then after the car ride it is really bad. Could it be DVT

We can't possibly know what it is and if it could be connected to a mistake during what should be a routine procedure.
Go to another doctor.