Look at the title of this thread, this is basically a frame problem. If a girl's not talking to you, you shouldn't give a s***, much less have it be "killing you".
Some girl blocked you, and you're sat here worrying and stressing about it. This is the worst thing you could possibly be doing. Even just not thinking about it is an improvement over sitting around worrying about it.
I have about 10 girls on my phone whose details I still need to delete from dates that didn't work out. I don't give a f***, I don't even give them a moment's thought (which is why I keep forgetting to delete them!) If I sat around worrying about the fact they haven't been messaging me I'd never get anywhere with my life, and I'd devolve into an insecure, whiny little kitten chasing women around like a loser.
You're the boss, you're the MAN, you don't give a f*ck when a woman doesn't have interest or ignores you. She's chasing YOU, not the other way round. If she doesn't like you, HER loss, not yours. Get out there and get on with your life.