Can someone explain??

So, today has been a very bad day in the Lowe Trailerhood for Miss Jaylee. We have had 4 accidents and I don't know what the deal is. We have been accident free for several months now, in and out of public, and even most nights we are accident free! But, she just randomly started having accidents today. Is this normal!? I knew regression was common with a new arrival of baby, but she isn't even here yet! I was hoping by pulling out the pull-ups she would decline and fuss and scream at me saying she wasn't a baby, but she didn't, she willingly put it on! What in the world is happening!?!!? We've come way too far, too easily, to regress and have to do this all over again!