Ds is now six months old and since his birth I have found my joints becoming increasingly stiff. I actually wake up in pain every day now, though once I am out of bed and mobile things do improve. Even if I have a half hour nap in the day I wake up with stiff wrists, elbows, knees and feet. I am still breastfeeding. Is there anything I can do/take to soothe this...? I never had these problems before.