PsA & Adalimumab

Hi , Im Anila. I hv recently been diagnosed as PsA. Had psoriasis since childhood , live with it and the psoriasis has not been a major issues until i had problems with join for few years until it became so bad early this year. Started on adalimumab 6 weeks ago. The result was great ! My hip & buttock pain almost dissapear. No major side effects until last 2 weeks. I feel feverish in the evening , muscle ache , sometimes like indigestion - feeling chills occasionally in cold weather or airconditioned room. Its like ur about to get some flu or something. Is it normal. If its normal , just need some reassurance. Adalimumab has done wonders to my pain that i cried the 1st week i felt the effecf