You can do this!
First, give yourself tons of credit--you reached your goal weight--your baby is really little yet--you're still here and want to keep up the loss you've had so far!
It sounds like you lost the weight by following a healthy plan of tracking plus exercise. That's good, too. You know what to do and what not to do. Now you just need to implement what you know works.
In two days, you're not going to un-do all the good which you've done, but you know that you don't want to continue on that path. Take a breath and get back on the wagon. We're all here for you.
As a side note, I do know how hard it is to maintain weight loss, at least for me. I'm still counting calories a couple years later and I have to get exercise or the weight creeps back up. If you're at maintenance, maybe you should check out the At Goal and Maintaining SparkTeam. It's a pretty active team and there are challenges that might be motivational for you.
We're in this together! Take care and good luck on your journey!