i was experiencing nausea more or less all day yesterday, but it got really bad in the evening, and i ended up falling asleep. i've been in bed more or less ever since.

nausea could be caused by anything, but what i'm experiencing is consistent with the effects of second-hand smoke, as i've experienced them in the past.

i thought it was better, but it's not, and it seems like i'm going back to sleep.