No poop since last Saturday, then BAM!!!

My daughter (6, almost 7 weeks) last pooped last Saturday afternoon. I had talked to her peds office we'd and Thursday and they tolde to try prune juice but if still nothing by Saturday (today) to call back and bring her in. Well, she had been fussy all night and started straining a while ago on and off. 2 am - an explosion took place! Lol man the mess was bad but at the same time I'm so happy! Lol any one else out there with similar stories? Lol