Reading into what I say

I'm under the impression my boss thinks I'm pregnant.
I got a bit of a late start this morning, for various disgusting reasons I won't gross you out with. I delayed my presence at work for a few hours, just to make sure I could handle being at work (and my Internet was on the fritz at home, so I didn't really have much of a choice).
So later today my boss is asking how I'm feeling, why I am at work, and what was wrong. I think she was suspicious. Then again, I always thinks she is suspicious ;) Then someone else asked me.
So while I can't be 100% certain, I am 99% certain I'm not pregnant.