I'm a 20 year old non smoking/ non drinking female, I'm not over-weight, I work steadily but am exposed to large amounts of stress. I'm also currently taking the Nuva-Ring contraceptive and several basic over the counter vitamins... I'm always feeling sick or down and just not right... The only known medical problems I've ever had are as follows: Diagnosed with uretero seal when I was 13, HPV when I was 18, and had a failed pregnancy at the age of 19. Generally, I thought I was pretty healthy until I started having large amounts of symptoms or feelings of sickness and every time I go to the doctor, they can't find anything. I started keeping a symptom log about a month ago and this is what I've accumulated since.
Cramps, headaches, soreness after sex, fatigue, nausea, back aches, chest pain, arm pain, depression, dizziness, loss of or increased appetite, lethargic, rashes on hands or redness of skin, foul smelling vaginal discharge, frequent urination, hot & cold flashes, increased mucus production, decreased sex drive, weakness in joints, exhaust with minor exertion, constant indigestion, diarrhea, pains in left side and rib-cage, dizziness when standing suddenly, moody, irritable when meals are missed, abdominal pain caused by bowel movements, stomach pains due to high stress levels, anxiety, loss of breath, painful urination, trouble waking up in the morning, sense of bladder fullness and hardly any is released, increased straining with smaller amounts of urine, constipation. I'm to the point now were I'm suffering 90% of these at the same time in one day and it's beginning to effect my work and personal life. What could possibly be causing all of this?

Candida.

Do you have an "eating disorder"?

No real medical only what I have had and witnessed. First painful urination and then filling still full seems like a urine infection, one thing you can try is to drink cranberry juice for about 3 days I mean constantly, this can really help with a urine infection, if not tell your doctor to check this and give you an antibiotic.
Sex problem could be, because you do not feel good. Feeling sick and week can influence you in so many ways . Have then check you for active Ebstein Bar , which is related to the herpes and yes candida Buy herpes I do not mean the VD type herpes and candida as I understand are in every one as is Ebstein Bar it is not a problem unless it be comes active.
Then they can cause all types of problems.
If your doctor does not knows what it is, find one that does know, so many doctors still do not understand this.
Look it up on the internet for a better understanding.
My daughter has so many of these symptoms and it took years to find out what it was, this was in the 80's, then it was called the yuppie disease, but it is no laughing matter.
ASI said the urine problem sounds like an infection, and for me a constant bottle of cranberry juice for 2 or 3 days all day long drinking it help every time and I had a lot of them.
Do you have swollen throat glands and sorethroat combined with flu like symptoms and back pain and very very tired?
These are major symptoms of Active EB.
Best of luck.

You could have candida, chronic fatique, fibromyalgia, environmental toxicity, or a number of things. Many Doctors don't know how to or don't bother trying to detect some of these things.
You need to get your immune system cleansed. Try buying good quality vitamins. Most of the commercial tablets do not dissolve properly.
Antioxidents, amino acids, B complex and vitamin C and E would probably be good for you. You really need Omega fatty acid or Flaxseed oil it will help with a lot of the things you mentioned. Take the capsules cause the straight oil can be hard to swallow.

Also eat healthy home cooked meals, whole wheat fiber and grains, lots of fresh fruits and vegetables. Food that is prepacked or canned have lost most of their nutrients and enzymes. They also are loaded with additives that you may be allergic to.
Also a big difference in my health was when I changed from table salt to sea salt.
Celtic or Himalayan salt are even better.
You need to balance and cleanse your system.

If you do try the cranberry juice, it's much more effective when sugar free