Help!!

Well i had decided to go shopping last monday and wednesday, one at Merry Hill which didn't hurt me too much, and i was totally doped up to the eyeballs!! Had a day of rest between them then headed off to Shrewsbury which is cobbled streets and hills, and this trip is what has done me in good and proper! Gutted, been suffering ever since... Thurs and Fri i couldn't walk at all, so least i'm improving from that, but still frustrated that a day out can cost you sooo much and not just in ways of money! xx