Ah fuck, your just a kid man. No mater what you do, things will be fine. If there's anything I've learned from being a stupid bastard of a son and getting in trouble constantly and having to learn everything the hard way, is that parents usually lie about their money situation. And even if they are broke, any half-decent mother (which it sounds like your is) would come up with the money to get their 19y/o son who stranded in a strange country in Europe. I'm sure your mom has credit cards, family, SOMETHING that will get her baby boy home. I think you really need to swallow your pride and be honest with your mom, otherwise you'll probably spiral down over there if you don't get a job soon. Think gay Swedish porn.
I'm truly sorry about your relationship problems though... fucking love.
I give being stranded and broke in Europe if I could be 19 again.