Clean Dates!

Greetings,
I have a question and I need as much imput as I can get. I have been sober for 18+ months and I haven't done dope for 7 yrs. I have degenerative disc desease and arthitis in my lower back. They said I have spurs on each disc, top and bottom. I am currantly taking pain pills as needed but not as perscribed. Does this mean that my dates are not right. I need help with this and if anybody could give me alittle insight, that would be awesome. Thanx for your time..
Personally, if you taking as prescribed for a short amount of time til healed I don't think it messes with your clean date, but ........if not taking as prescribed then that is abusing them. I think it's easy to find justifications for whatever it is we are looking for. JMO & not based on any kind of fact. Ask yourself if you are abusing them in any way?