Naps have gone to crap

I've been a part time mom since February, and basically a SAHM since June as school is out and will go back full time in August. I've been home for every nap and every bed time since he (LO) was 6 months old (Now 14 months).

I went to a much anticipated concert last night and didn't get home until after bed time (he was with his dad all night). He misbehaved all evening (as much as a one year old can) and wouldn't nap. He couldn't even get him to sleep for the night until I got home.

And the icing on the cake... He won't nap. Naps were going so well. An afternoon nap for an hour and one later for two. And now he just screams until he makes himself hyperventilate.

I mostly needed to vent, but anyone who has been through this, what did you do?