Is it. Need to get a colonoscopy but I'm worried it'll possibly seriously mess with my fissure. I feel like I'm making progress with my fissure... ?

You know I'm not sure. But my mom got one done when her fissure was still not quite healed, and it turned out fine.
I would definitely give the doc a heads up to be careful of it!
-Tanya

the problem with colonoscopy is two-fold... First, the cleaning out with the huge doses of laxatives you have to take that give you severe diarrhea, then the procedure itself, which could conceivably cause a problem with a fissure too... If you do decide to go ahead, use a lot of Vaseline during your cleanout to protect the area from the diarrhea, and remind your doctor to be extra gentle due to your fissure situation.

I WOULD NOT GET A COLONOSCOPY! NO NO NO! Unless you have some real problems you need to address. I had a colonoscopy 3-1/2 years ago, no problems except 3 benign polyps which he removed. Then I had my fissure repaired with a LIS which worked great. Because of the polyps I was to have colonoscopies every 3 years. I just had my second colonoscopy, where the doctor removed a polyp in my rectum. It turned out to be benign, of course, but has since morphed into the mother of all fissures and is now controlling every aspect of my life with pain and fear of BM's. Having this procedure was easily the worst mistake of my life.

Thanks for the feedback! No real problems other than the fissure. My doctor doesn't think a colonoscopy is necessary but offered it for piece of mind. It is very clear that I have a large, recurring fissure that is causing my issues but I'm a worrier. Sounds like I should wait a bit. Thank you!