Toddler fell of a swing over a week ago and hurt her ankle, screamed when she done it. Took her to a&e as she couldn't walk on it, they done xray, nothing showed and said likely to be a sprain. Since she has started limping on it, keeping the injured foot flat and not bending the ankle. The last 3 days, in the evenings it seems to really swell up and she switches to crawling. I can rotate the ankle but she is hesitant and tries to keep it stiff. Is this normal for a sprain? Im worried she's walking on it and seems to be making it worse