Please help me, I want to play Minecraft again

Hello! I have a huge problem with Minecraft. This problem is so big, I didn't play Minecraft for over 2 months!  So, the problem is, if I get in the Main Menu of the game (fortunately) and trying to load- or create an existing or new world, the game loads. Thats normal.

But if I click again, while world is loading, the game doesn't react anymore. Sometimes I even can't get in the Menu! Its almost done with loading and it doesn't react anymore.

Please help me. That problem makes me very sad.

Have a nice day everyone.

It's not working  again!