I Suspected I Had Some Type Of Parasite Recently. I

I suspected I had some type of parasite recently. I had a lot of diarrhea and stomach pains. I noticed that stool looked like small pieces of half circle shapes, but did not see any actual worms as some people have described. Could they have been encmpassed in the stool I ate pumpkin seeds, took probiotics, ate more yogurt, cut out sugar and also ate more garlic and I no longer see the curly circles and things seem much better. However, how can I tell if they are gone and won't come back. Does this sound like I had a common parasite. Should I go to the doctor?