Why is Priyanka Chopra looking tired?

Priyanka Chopra was spotted at the premiere of Mira Nair's film at a multiplex at Juhu looking a tad drained out

The actress recently stated on her microblogging site, `Hey.. Sorry I disappeared.. Had to deal with some trash.. But back! Thank God for small mercies...`

Hmmm... what's playing on PC's mind?