Clob not helping

So I saw a dr and she diagnosed me with LS through a visual exam and explaining symptoms. I was prescribed clobetasol and used it for 2 weeks, it seemed to help and by the time I wrnt back for a 2 week follow up I was mostly better, still itching a little off and on. She told me to do another 2 weeks but that didn't seem right to me so I waited. I ended up having a period and ditched the whole time, started the clob for another 2 weeks the day that ended. Anyway, I'm on my last day of the 2 weeks and still itching pretty bad, using my lidocaine gel once- twice a day. I'm gonna ask my obgyn to do a biopsy on the 5th but I just can't figure this out. Why is the clob not helping?? I also have lupus/SLE and fibromyalgia. Sorry about the long post, just don't know what to do