POTS symptoms

I have been experiencing many debilitating symptoms. So debilitating that I cannot attend school. In January 2007 I had a really bad cold, and it all went down hill from there. I started to get a really bad headache that didn't go away for 18 months. Was even put in hospital for DHE treatment which only made it worse, & heart rate went up to 190 while on it. Then the year 2008 I was diagnosed with POTS and am now being treated for it. But I still have so many symptoms including: tingling, numbness, anxiety, depression, sensitivity to the heat & cold, chills, cold sweats, hot flashes, extreme weakness & fatigue, ringing in ears, blurred vision, constant colds & what not, shortness of breath, dizziness, lightheadedness, joint pain, muscle tenderness, sharp, tingling, itchy, burning sensations, frequent urination, nausea, vertigo, heart palpitations, and so on...I have had an MRI done and it showed a lesion about the size of a dim I believe, in my right frontal lobe in the gray matter, which was where most of my headaches occurred. Please pray for me & everyone else with debilitating problems such as this. I would very much appreciate it! God Bless!