Today is free for you to set your own course, but if you want to get out and about again then you really should head for the Ordesa Valley, truly one of the Pyrenees' most iconic day walks.
The route starts gently as you follow the valley floor through beech forests, gently climbing up past a series of waterfalls. Once you pass the Soaso cascades, the trail pushes up to emerge into the wide glacial basin at the head of the valley, in the shadow of the peak of Monte Perdido. At the very far end of the basin is the horse's tail waterfall - Cola de Caballo.
The easy option is to walk a fairly flat route, 3km each way, as far as the first waterfalls and back again. If you want to upgrade this to a full-day walk, then keep going all the way to the Cola de Caballo and back again along largely the same path. There's also a way of getting up high onto the valley sides and then descending to the waterfall if you are feeling particularly energetic!