Orencia side effects

I had my first 3 introductory infusions of Orencia and recently progressed to my second "monthly" one.  I have had some headaches during this time and never had that side effect before with any of my medications.  (How can I even feel a headache with all the pain killers I'm on for my arthritis?) Maybe they will go away?  Anyway, I'm wondering if anyone has noticed a problem with body temperature regulation since they have started Orencia?  I did notice that since my first infusion I have been running "cold".   I seem to need more blankets on the bed at night though the room temperature is where it has always been, and socks to bed also, when never needed before to stay warm.  A big warm sweater and socks around the house are now the order of the day with room temperature at 72 F.  I never needed that before.  Sometimes it works the other way too.  I'm so hot I can't stand it and have to go outside to cool off (written in March),...then, soon,...I'll need the sweater again.  Not menopause, I've been over that a few years now.  Would love to hear from anyone else regarding the body temperature regulation thing or any other suspected Orencia side effects listed or not listed on the literature,....Thanks!!!!