i've been taking some antibiotics since last week because i had a staph infection. Can antibiotics cause this?
pay close attention to what you eat and how your body reacts to those foods. Make a food diary. You may be eating or drinking something that doesn't agree with you. Maybe you are developing an allergy to milk, I did at the age of 17. Maybe wheat or grains are causing it, alcohol, spicy foods, sugary foods, junk foods. You need to write it down so you can figure out what is causing the irriatation. If you can't figure it out, see a specialist - Gastroentrologist. Hope I helped you
Welcome to the gastroenterology community! I would recommend seeing a doctor about this. It is unlikely that this is something serious but it is best to get it checked out by a doctor.