I got clear mucus in stool

I have been experiencing clear mucus in stool. I was having a right side abdominal pain (not so much just a little and irregular) and ı gave blood , urine tests and ultrasound it was all clear. My doctor said there is nothing to worry you age is too young for something important ( i am 20) But i keep seeing mucus in my stool not too much but there is 1 - 2 strings in it. 

Is it important ?

My doctor never mentioned me IBS , can it be IBS ?

I have no other symptoms.

You need to see another doctor. How dare him tell you that you are too young to worry about other health issues. He is a real winner. What does he mean by that. Could be a list of reasons why you are excreting mucus. Gallbladder, IBS, Ulcers and Gastritis should I go on. You need a second opinion. Ok. This is your health we are talking about. Good Luck.

I was have another doctor too. We did some tests and he says clear too. I dont have ulcers gastritis or gallbladder. He was mentioned IBS . He say that if your keep having same symptoms we will do another tests. But i dont have any other symptoms then mucus. I can see it with naked eye but there isnt so much of them. Also it s like there is more when i got constipated . So when my stool is normal there isnt much mucus at all

The question is, is it really mucus or just fluid or enzyme?

Example, gastric juice is a thin, clear, virtually colorless acidic fluid secreted when digesting food. 

Digestive enzymes or juices can be carried out with your stool. 

As you can see, you lab results are normal. 

I think its not a good idea to just base your overall health to 1 - 2 strings or very small amount of mucus. 

Also, our body has the capability to heal on its own if you keep yourself healthy. 

Yeah , I think you are right. I am a very anxious person about ilnesses so i was worrying about it. Thank you