I guess I haven't really recovered from my illness as two forth nights ago, I felt sharp pain throbbing in my head and whenever I turn my head fast, there's a slight darkness and flash...Last night, the back of my head was killing me...It stung and made me feel so dizzy. I needed to close my eyes for a while to make the pain went away. And earlier today, when I was out to immigration (been there 3x in the past 2 days!) with my dad, I felt like the whole ground moving and the bench moved back and forth. Back to my office, I saw my desk moving around. At one or two times, I felt like I wanted to vain. I have no idea what's wrong with me...I never suffered from any serious headache previously. I went to bed so early in the past two days (was in bed around 10pm on Monday and 9pm yesterday -> so not me!)...the lump on my left neck has grown smaller (that's a relief)...