So still not the first sign of

(She was due yesterday)
Last night I felt totally "normal", went to bed still feeling fine, and about 20 minutes later I was so sick I thought I wouldn't even make it to the bathroom before vomitting. After that I had to lay in bed for about 30 minutes and try to breathe through it and talk myself into not vomitting. Even when DH would move I would feel like I was going to be sick again.
Well I finally fell asleep at about 12:00 and slept pretty well. I woke up a couple times.
My temps are still down and now FF says because of my data it can no longer be certain of my O date. I'm assuming this is becasue I still haven't indicated AF.
I wonder what all of this means?