Bulldogs World

Hi all!!! First of all I'm new to this wonderful group of bully moms and dads so just want say nice to meet you all. 2nd I need a little advice, on my oldest Tank's (he will be 9 in December) front right paw on the pad he has a couple small what looks like little blisters, but I'm not quite sure if that or not. The area is red and a little sore bc he was limping a little tonight at the beginning of our walk but of course we all know bulldogs show no pain and his limping didn't last long. With the weather now cooler we have been taking both our boys (Trooper is our youngest and he will be 8 in December) for evening walks down our driveway, which is about 1/4 mile long, so I'm thinking Tanks paw is a little irritated from not being used to walking on the concrete. Besides soaking his paw in Epsom salt (unfortunately we don't have that on hand right now) any other recommendations, or advice on what to do or put on his little paw? I really appreciate and value everyone's input!!! Sorry so long!! Thanks for your help!!