Which size birth ball should I buy/any good recommendations. My budget is £20. Ante natal classes said 15 pound should buy a decent one. I'm going to argus this afternoon
Also how often can I use it, I'm suffering restless legs and hoping if I can sit on it and bounce it may actually allow me to watch television as I can't sit still for more than five minutes today. It's like being tortured.
I'm around five foot/five foot one.