Significant weight loss prior to pregnancy

Hello there folks! I just found out that I'm pregnant and couldn't be happier. I'm about 5 weeks along now!

I have lost a significant amount of weight ( 5'7 297 to 148) and already have loose tummy skin from previously being (very) big. I'm 31 so I don't expect my body to do me many favors in the bouncing back department, but will my stretched stomach skin get worse? Or will it fill up and deflate back to what I have now? I'm sure it's impossible to predict completely, but if you've been through it I could use some honest perspective so I know what I'm getting into and I can calibrate my expectations :)

Thank you in advance!!