So i went to toilet and my stool color is normal but mixed in i saw some red things. like i tried moving it and it floated down.yesterday i ate a sandwich that had tomato so could it be the skin of that. how do i know its blood or undigested food?

Blood test: Blood in stool can be tested. Visit this site for information and talk to your doctor for the test. https://medlineplus.gov/ency/article/003393.htm Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV and Covid vaccines.