sick for the last 4 years. main symptom is nausea

4 years of ill health - nausea
I am a 25 year old female who has been sick for the last 4 years.
My main symptom is nausea, which feels like it sits at the top of my stomach. This is acompanied by, headaches, weird feeling from the top of my stomach to my throat, headaches, irregular periods, eczehma, very tired/ fatigue, belching,lymphnodes in groin,yellowish hands, red dots on skin,strong pulse in upper stomach, tender in stomach below ribs in the middle,bad memory bloating and the list goes on.
Some test result findings: Blastosistis homminus (had treated), Minor scalloping of duodenal folds, Malobsorbtion, High iron, Ovarian cysts, candida(stool), colostridum difficle (just been treated), and the list keeps going.
I have been told i have infectious IBS, a possible blockage of duodenem, reflux(antiacid medications dont work), a bruiet
I have had numerous findings in tests but no doctor has been able to piece it together and fix me.
I am wheat and dairy intolerant as well as a few other food sensativities. I am not sure how long i can go on being sick like this for so can someone please help me?