Thanks for you replies. Unfortunately, things seem to have gotten worse.
Msimon: not sure how big the gap is meant to be - but it looked like it went from about 1 o'clock to 3 o'clock (not sure if i'm using the clock face correctly here but the gap was from the anterior to the left-hand side), maybe a little bigger than that - almost a quarter of the entire circumference. Does that sound big? Does it also sound like it's in the wrong place? I assumed it would be a little gap at 3 o'clock. But this is clearly where the gap that I can see is - and this is where most of the stool seeps through.
Also, I had blood today for the first time since the surgery. It wasn't a lot, but I could clearly feel my first BM sting on it's way out. Although it wasn't particularly large or dry or in any other way different than usual. Sure enough there was blood when I wiped. Not sure if it came from the fissure, or whether it came from elsewhere.
This particularly worries me as I have a manometry test on Tuesday - is this going to make things worse? Will it rip things even more?
Also had a disconcerting experience later on. My second BM strangely caused no blood or stinging. I did my rectal rinse, which seemed easy, with very little stool coming out. However, an hour later I felt like I needed a BM, went to the toilet and all that came out was a lump of mucous. I've seen some mucous in my stool, when wiping for years but never this amount. I'm starting to worry that I have some kind of partial prolapse causing this mucous.
Can't for the life of me figure out what's going on down there. Apart from the irregular shape of my anus after LIS (it's zig zag now, rather than a straight line) and the anterior skin tag, it almost looks normal. However, if I part the skin tag the area below looks like a red wound. It basically looks like all these fissure pictures -
anal-fissure-classification-with-images-t7476.html - would I know for sure if it looked healed? Since it's under the skin tag it hard to see properly under the folds. It looks like it goes deep and it's hard to know if what I'm looking at is "healthy" healed skin or a wound.
All I know is my arse is sore, I can't predict my bowels very well, I have trouble cleaning, and I have leakage issues. All in all, I wish I could either go back to before my LIS and not go through with it or go to sleep for a long time, wake up and hope that everything is fixed. Unfortunately I have to deal with this every day, and I've honestly had enough now.