NAD but I mean you explained it yourself. You have regular bouts of constipation caused by your medications. The good news is that constipation can be relieved in many different ways, they will likely resolve this issue for you fairly quickly. You mentioned OCD and how you spiral googling explanations, this is probably why you’re so anxious about the appointment.

Again, NAD, but I am optimistic for you. You already did the hard part and got an appointment scheduled, now just let the professionals do their thing and get you the help you need. Hopefully they can offer a remedy for your “irregularities” for an future events. Good luck to you OP, hope everything gets resolved quickly for you.