I Recently Went On Vacation And Walked Everyday On Much

I recently went on vacation and walked everyday on much of the time, uneven pavement or cobble stone streets..After a few days of walking many uphill streets, I felt a numbness / tingling, in my thigh area, sporadically. Then after 10 days my feet and legs became swollen. This has never happened to me before. I am 64 female. Elevation seems to help.