I am 27, 5ft 8 inches tall, 9 and a half stone, I have SLE, and fibromyalgia. Recently I ve been getting sudden cramps in legs and numbness too, the numbness is also in my arms and hands to the point where I sometimes drop things. I also get alot of floating objects in my vision and facial numbness (though I ve been told this is migraine related). The numbness in my legs and arms is new though, and is more like a tingling sensation