Helen, I commend you for trying to avoid the operation, but if you're not having spasms, then it would probably be unnecessary anyway. Try to make sure you get get plenty of healing nutrients like B complex, zinc, and C. At your age, you should be healing,
Rather than anoheal, I suggest you see if your doctor can't prescribe the nefedipine or diltiazem creams, and try your best to keep your stools soft. Cooked vegetables are an ideal source of soft fiber and I believe that eating foods with a higher water content, like the cooked veggies, is a better water to bring water into your stools than just drinking liter after liter of water throughout the day.
Have you had your fissure examined lately to see what it's current state of healing is? Good luck!!