I am 20, female, 5ft 9, 11st, and for months i have had various health complaints such as IBS, pain in my right ovary, which lead to various other problems such as no energy, uncomfortable sleep, nausea, dizziness, vomiting, lump in my throat and sciatica and now i have tightness in my chest and i'm very worried, as the doctors cant find out whats wrong.