Ребенок 2 года: странное поведение, подворачивается нога при ходьбе, что это может быть? Советы

My 2 year old has been acting weird this morning. Like she's fine and happy but when she gets up to walk or run its like her 1 leg buckles and she falls or she will start to run and then slow down and grab her thigh and fuss but not cry. Obviously I'm paranoid about everything so im trying not to over react as she doesnt seem to be in large pain, just enough to stop walking and grab her leg and whine for a second. But she was fine all day yesterday. Im hoping its as simple as she just pulled a muscle or something. Im going to give her tylenol to see if it helps but if shes still acting weird through the day or gets worse ill take her to be seen. I hate that its always on the weekends when her dr is closed 🤦‍♀️