SweetPea, the fissure healing have stages, after the worst if over you get weeks of feeling good with days of feeling like the fissure is back, but eventually the good days will be more than the bad ones and one thing you will notice is that the bad days are not like when the fissure was at its worst.
As long as the discomfort if manageable, you are healing, the blood will come and go, I remember all the stages I went through before I was healed and the blood is something that I had until the end.
But if at any moment you go back to the spams and pains of when the fissure was fresh, then is time to talk to the doctor again.
It took me a whole year to heal naturally.
But if for any reason I get my fissure back with the horrible spams and pain I will get surgery, not waiting this next time.