Hello, I Tried On Jeans At Goodwill (after Carrying Them

Hello, I tried on jeans at goodwill (after carrying them around for at least half an hour) and remembered just before that I wasn't wearing underwear (normally do) but went ahead and tried them on. Also one pair may have been on the rack of recently tried items but not sure. So now I'm freaking out about the disease risk. Please help!