....bad mum?

Am I a bad mum for going with my son on his first day of kindy and ditching him an hour later for Zara? In my defense he is loving it SICK, so his teachers were encouraging me to go shop...i swear,well and no calls yet from them yet so I'm pretty sure he has forgotten who mum and dad are. Didn't hurt that we started the day off on a fully sick ferry ride either. Just about to go meet ex for lunch to fill in time till I pick mini man up after his sleep..... I could get used to this!! Oh yeah I have to get a job, booooo!