thanks for the thoughts :)
i saw the surgeon yesterday. He examined me and said he definitely still sees the fissure, although it doesn't look worse at all. He even seemed a bit puzzled as to why i haven't healed yet, but not worried. He assured me that we'll get rid of this thing one way or another.
He did say that some people just take much longer than others. Although the majority are fully healed by 6 weeks, he has had a few cases that took up to 8 weeks for the fissure to heal after surgery. I guess I just have a particularly stubborn fissure, because I am doing EVERYTHING right.
He said there's really nothing else I can do to help it heal, aside from keeping the stools soft. He said baths won't necessarily even help. He also told me to start working out again and living as normal a life as possible, because nothing i do will make it worse - aside from being constipated.
All in all, I'm going to give it 4 more weeks (until I get back from my Hawaii vacation). If it's not healed by then, we're going to consider another LIS on the other side.
At this point, if it's not healed by then, I will definitely have the 2nd surgery. He said the risks of incontinence at my age (24) are very small, even with a second surgery. It would be worth it to me to try anyway! I still haven't given up hope though!