Bracken -
Sorry you had to find this forum...but good you did. Sounds like you are in the thick of things right now. First off -- go see a CRS as soon as you can to get checked out and at the very least to have a consult with a Dr.
As for blood -- that is a pretty normal result of a fissure. The mucus less so....that is what I would want more info on. You should search the word mucus between FAQ and Portal at the top and see what others are saying.
As for the fissure -- you should get yourself some fissure cream, start drinking lots of water (8 glasses a day), use a warm sitz bath or regular bath after each BM, reduce processed foods and eat a healthy amount of soluble and insoluble fibre.
Get looked at....and all the best,
Canadabum