moved to China a month ago had sinusus, meningitis?

Hello. I moved to China a month ago. I had a sinus infection and started to get headaches for three weeks. Then, I started to feel faint and very off but it came and went in waves. Three days ago, I went to the hospital for them to scan my brain and they said it was ok. The next day I vomitted in the morning and had very very watery clay coloured diarrea in the day. The next day I was feeling a lot better and spent the day resting but didnt eat too much. The next day (today) I felt ok in the morning but when I went to work and the day progressed my neck (which has been on and off aching for a couple of days) got quite bad and my arms started to ache really badly. A chinese person took my on the tube but I fainted on the tube and had to get taken to hospital there. They are not doing tests till tomorrow 830, they said i hadnt got meninjitus becasue I have no fever, although i have small chills. Do i need to worry about meninjitus? Please help? Im so worried.