Originally Answered: I need a "diagnosis"?
That "teen advantage" is complete and total junk. In fact, it is damaging your body by damaging the DNA of your cells. It is made with synthetic chemical activators and loaded with excipients that are suppressing your immune system, trans fat, and nutrient absorption inhibitor (Magnesium Stearate). The diarrhea is most likely from the Mira-lax garbage. The ingredient is a petroleum distillate, Polyethylene Glycol. There is nothing natural about it, yet they call it a "Natural" laxative. The only thing it does is treat the symptom and NOT the "root cause" of your digestive problem. That is called "MAKE BELIEVE HEALTH."
You need to find out what is the underlying root cause of your digestive issues. Doctors are NOT trained to do this, they treat symptoms.
Typically, diarrhea is due to a few things, such as bad bacteria from food you ate, the lack of good intestinal flora from taking any antibiotics, drinking chlorinated water, using ANY fluoridated products, or even just eating the SAD diet (standard American diet). The lack of good salt is another reason. Since your Adrenal Glands are responsible for keeping water in your colon, if they are exhausted from eating high carb, low salt, low fat diets, you will get constipation easily from that alone. The lack of good drinking water will also contribute heavily to constipation.
If you are not getting enough sleep (you need a minimum of 5 hours of uninterrupted sleep to recharge your adrenals), you will be fatigued due to exhausted adrenal glands.
What typically happens to the average American today is that they eat the SAD diet and end up with exhausted adrenal glands, getting their limited energy from cortisol (the stress hormone made in the body), and not eating enough fat to sustain health and limiting salt intake that creates low stomach acid (that is responsible for sanitizing food and breaking down food properly), then they get sick and go to the doctor who administers "Make Believe Health" by giving them drugs like antibiotics that destroy 3/4 of the immune system and then they start on a cascade of events leading to chronic illnesses.
I suggest you see someone who understands how the body works from a health perspective and knows how nutrition builds the body up instead of tearing it down with drugs. In the old days, Jack Benny, Red Skelton, etc. were what amused us on T.V., but today, the drug commercials are where most people are getting their laughs when they start listing the so called "side effects" of drugs; death, loss of eye sight, permanently disabled, diarrhea, etc.
Antacids are a big contributor to many illnesses regarding digestive issues. The $50 billion dollar revenue generated by them is quite an incentive for drug companies and doctors to prescribe them no matter what it costs the patient in bad health for doing so. Acid indigestion is caused by a lack of good stomach acid. Lactic acid forms from rotting, putrefying food because there is not enough stomach acid to digest the food and so the sits and rots and you get an acid feeling. Doctors give you an antacid and you feel better because the acid feeling isn't there, but now you get the booby prize, rotting mass of chyme moving through your body throwing off toxins everywhere. Does that sound like a good idea to you? So now they make a clever marketing acronym and call it a "disease," GERD. Now, you feel good because it has a name and they have a solution. Clever.
The real problem is lack of stomach acid or how your body is utilizing stomach acid, NOT TOO MUCH! So, instead of solving the problem they promote drugs to allow you the privilege of providing them with money to keep them in the style to which they have become accustomed, leaving you with "MAKE BELIEVE HEALTH."
I strongly suggest you solve your digestive problems by becoming healthy. Go see a Certified Nutritional Therapist that can advise you. They can test you and tell you specifically what nutrients you are lacking and help you get on the road to REAL HEALTH.
good luck to you
Originally Answered: I need a "diagnosis"?
I'm not a doctor, and I would have to know more about your medical history to give you a good answer, but from the sounds of it you may have mononucleosis, which is a disease that can cause fatigue for a longer period of time. (Some people are affected for weeks, some for months). If you go see your doctor, he or she can test you for it and tell you if it is something to be concerned about it and how to recover in the best manner.
If not that, you may be experiencing a sinus problem or infection. If your immune system is busy fighting, your body naturally becomes fatigues— it is inevitable (to different degrees) in most sicknesses. The buildup of mucus in your system could be causing the diarrhea.
But like I said, the best way to find out what's wrong and how to get better is by seeing your doctor. Feel better soon!