Student or Learner
I've told you thousands of time not to get on my nerves, but you never listen a word I say, so don't blame me if something wrong will happen.
Is it grammatically correct? (mainly I mean tenses)
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
I've got also a question, "Don't blame me if something goes wrong". How do you think the first part is correct or "won't blame me" will be grammatically correct according to the First Real Conditional sentence?
... and "won't blame me" is not.
I don't see the connection between the person getting on my nerves and something "going wrong" unless the thing that goes wrong is that I punch the person in the nose.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.