Hi there!
You made it through! I can't believe you had 2 fissures, but I'm glad the doctor caught that and took care of them. My doctors didn't let my mom or fiance come in either, but they were all nice about it. I'm sorry your nurses weren't very understanding :/
I took my dressing off by myself at the hospital right before I was discharged. I'd read about dressings and didn't want to deal with it later on, so I decided to remove it then when was still pretty numb from the surgery. Mine was external too but stuck a little bit because the blood started to dry. I probably shouldn't have done that, but it didn't do any long-term damage. I imagine yours will come off during your first BM or sitz bath.
I started sitz bathing the day after surgery. Right after my LIS, I just iced the area and napped/rested most of the day (my surgery was in the morning). I never took the Vicodin that was prescribed to me, and instead I took 2 extra-strength Tylenol every 4 hours like clockwork. Vicodin can be binding and I definitely didn't want to risk that. I would say avoid the narcotics if you can and just go for Tylenol. Why risk constipation when you can manage the pain with something a bit more mild? I guess it just depends on how much pain you're in, but I'd really try to avoid taking them. Definitely continue with the Colace. I'd even suggest 1/2 a cap of Miralax if you're going to take the narcotics. Avoid the Magnesium Citrate since you don't want explosive diarrhea.
I had my first BM the day after my surgery. I was DREADING it, but I swear it barely even hurt (or didn't hurt nearly as much than a fissure BM). There was some discomfort from the incision but that was it. No lingering fissure pain or muscle spasms/throbbing afterward! Just have your sitz bath ready right after. I was told not to use toilet paper down there, so I used baby wipes and also bought Tuck's Wipes which have witch hazel and can be soothing. It's really important to keep the area clean so you don't risk getting infected. So I say trying doing a sitz bath at least 3x a day to help with that.
Other than that, just eat plenty of fiber and rest. I was starving from fasting, so I ate pretty normally after surgery. Again, I'm plant-based, so I eat a lot of veggies and beans. I would avoid anything that can constipate you. Also, I learned that walking helps keep your stool softer, so once you're up for it, I'd try to move around a bit.
How are you feeling today?