My big shirt is getting tight

I have a couple of shirts, tank tops, that I like to wear around the house. They are were large and roomy. Well, not so much anymore. I put one on tonight right out of the laundry and it was tight around the tummy. Ummm, yeah,,, Wow!!! Part of the problem is the large amount of stress I'm subjecting myself to. I know the stress hormone causes you to store stomach fat and that's pretty much where everything is showing up.  So now I'm stressed and depressed. {{{sigh}}}  I guess it's time to get really serious. Either that or it's time to give up completely.