So. We had sex without a condom and he came above my underwear line. I took plan b a month before because of unprotected sex (no lectures please) and so I think it is making my periods really irregular. I am a week late for my normal period but I heard that it is just a plan b symptom. Anyways. Today I woke up and I had bad diarrhea. Then all throughout the day I was peeing non stop. Like every 20 minutes. Is this completely unrelated? Could I just have a stomach flu? Am I stressing over nothing?