Over ambitious and ouch!

Ran into my first hiccup in PiYo.  Advice for anyone who is starting this with fibromyalgia-- don't jump into the calendar challenge.  The first week was great but I wasn't ready for the Core workout and I managed to make my wrists and ankles really sore as well as muscles in my lower back.  Might have to take a couple days to recover or I risk injury.  Will be doing some of the non weight bearing parts but have to really feel this one out.  Anyways, I'll be sticking to Lower and Upper Body and Sweat until I can get my ankles and wrists handling the weight.  It was the twisting transition between sit-ups and side planks that made me hit that brick wall but damn, only a week and a half in and I feel some great muscle developing already.  Can't stop pressing and flexing just to see and feel it.  Just have to really be careful with pushing it.  Chronic pain is a lifelong reality and I can't get overconfident and risk setting myself back.