My long time pharmacy switched generics on my last refill, which I didn't notice at first. I am a chronic pain patient who's taken this medicine for years, and this particular brand is no where near as effective, leaving me in much more pain than normal. Do I have any options before I see my Dr in 3 weeks? I'm trying to save myself the embarrassment of approaching my pharmacist--i find it difficult enough being a chronic opioid user. Thank you.