Hi Imwarr,
I had this at about 22 weeks too, it only lasted for about 2 or 3 days |I think. Felt really like my tummy was tight and stretching - very uncomfortable!! I figured it was probably the little miss having a growth spurt!! Its fine now tho..........apart from the constant back ache, leg ache, tiredness etc etc!!
I've not been around for a while due to personal reasons, so have missed out on loads!! How's things going with you?