Muscus can mean so many things that people often throw their hands up in the air and simply accept what their doctor says and prescribes.
There is mucus we need (such as the mucus membrane in our digestive system, that can protect us from too much acid), and there is mucus that harms us, (in our intestines it can coat the nerve ending that stimulate bowel movement), or indicates something is going on with us that is not good (i.e. a snotty nose from a sinus infection). There is cause to be aware, but unless you are experiencing a variety of other symptoms, especially pain, I would only be concerned for the sake of awareness of what you may be doing to yourself that could worsen.
Start out simple. 90% of the time, what comes out our bottom is directly related to what we put in our mouth. I have struggled with constipation most of my 48 years. I have learned when I eat hamburger (especially fast food type, and any greasy fried food, dairy, bread (especially white), and a few other food that tend to be mucus forming, such as sugar), I produce a whitesh mucus in my stool. And it usually accompanies (or should I say, triggers) increased constipation. Excess clear mucus, concerns me less, but I make dietary adjustments for that as well (maybe a little more fiber, vegetables, etc). Since I have lessened my constipation through an increase in healthy oils in my diet, it is not uncommon to see the clear mucus when I am on the high end of my oil intake. It seems actually assist the bowel movement. I only minimize it because I understand the problems too much mucus can cause.
Start there, then look to deeper isues, such as yeast infections, or worse. Mucus can form as a result of your body battling ailment. So as always, talk to your doctor, but dietary considerations may be all you need (and it helps tremendously with IBS).
Hope this helps.