Can diarrhea or your poop be related to std?

Probably not, but: Even if it is not std, diarrhea can be a serious symptom and you might be wise to have it checked and treated. Also, if you feel like you were exposed to a std, there are tests you can take for most that would relieve your anxiety (which can cause gastric stuff). Finally, you might want to practice safe sex all the time - it's a good habit to get into. Best!