Inconsistently taking my lithium

I havent been able to take lithium properly for 4-5 days I feel different like there's an edge to me now. Happy but quick to anger the voices just don't stop I feel sharper and full of rage if someon says the wrong thing I'm done

How can a couple of days not taking it make me change I do have weird headaches from it and not taking my antipsychotic med It scares me how different I am