"It's whatever"

I was in a cranky mood tonight & I guess my husband was too. I was cleaning in the kitchen & him in the bedroom. He asked me, "are you ready for bed yet?" I said I guess & he said, "well if not, its whatever." Then turned the hall light off, went to the bedroom, & got in bed.

I just stayed in the front room, because to me that was "I really could care less if you come to bed or not". Then he came out here 2 hours later pissed off & asking me "why are you out here" almost with an accusing tone.

Ugh. Just feeling frustrated & annoyed tonight. =( Would you take that statement the way I did, or am I just being overly sensitive bc I had a bad day?!