Weird Sickness~

Last night, 2am, I went to bed.
Can't fall asleep.
At 3+am, stomach started feeling not well.
Feeling getting stronger, I felt like vomiting.
Suffering and turning around on the bed.
Worried might vomit on the bed, so rushed out and sat on the staircase for a while.
Feeling dizzy and thought of the chemical gas that I sniffed deeply in the morning.
Went to toilet but not stomachache.
Legs started to feel itchy.
Red dots started to appear like mosquitoes' bites.
Body started to feel itchy as well.
Thought I was bitten by mosquitoes although I didn't see any of it.
Went back my room.
Itchiness spread all over my body, everywhere.
More and more red dots.
Cheeks and nose were very pink in colour and I felt heat up.
Turned the air-con to high cool.
Tolerate the itchiness and went to bed.
Didn't tell my parents or anyone about it.
At 4.30am, fell asleep.
Woke up at around 7am and checked my body.
Everything has gone.
Back to sleep...zzZZ

I have no idea what's wrong with me. Anyone who has sniffed the gas feeling not right last night? Or there's other causes? I thought it's "feng muo" also but not! =s
WEIRD!!!
God bless!

Love Hui ♥