Invalid Username/Password?

I just bought myself Minecraft yesterday and now I cannot log in to my account!

The funny thing is I can’t log in on Minecrafts website either, it just will not let me click the login button or something.

The launcher itself would tell me I have an invalid username or password but I sent the login info to my friend and he can log in to it just fine. I don’t even know where to start with this! I don’t use VPNs and nothing is wrong with my internet connection, I have very fast internet and I can use any game or website without problems.