Anyway besides going to the dr to tell the difference between c.difficile and food poisoning?

ok heres the story i was on penicillin vk for a tooth infection my last pill was taken 12pm last saturday,during the course i had no side effects,sunday night i was out went to eat had a burger..mon afternoon when i wake up have stomach cramps and diehrra this continues for the next 3 morning mon tues and wed i have 2-3 loose stools when i first wake up and i wake up with with burning stomach cramps..for those days i take imodium on thurs still same problem so i think let me stop the imodium cause whatever is causing this needs to get out..so over the next batch of days it seems to get worse 2-4 loose stools bad burning cramps apon waking i figure its worse then the other days cause those days i took something to stop it..so here i am almost a week later still having problems was going to go to the dr this weekend but no hours..so im thinking its either from the antibiotic or something with that burger is there anyway to know for sure besides going to the dr