Hi and welcome. Well, neither of those are early pregnancy symptoms. And yes, even if they were, it is way too early. Four days post sex, the egg would just be implanting.
Being drunk is a bad excuse for reckless sexual behavior. How would you feel if you became pregnant by 'this guy' (some random guy?)? Or have a sexually transmitted disease that you had to tell every sexual partner you have from here on out about to give them the chance to decide if they want to be with you or not. I think of reckless sex as just waiting for something bad to happen--- a lot like drunk driving. And you give away a piece of yourself and your dignity every time you do it. Make love to men that love you. Not just some guy. Then if you have an accidental pregnancy, it is much easier to live with. Anyway, if you are going to have sex that is casual in nature like this==== make sure you buy some condoms and use them EVERY time.
good luck hon
PS: you could have taken the plan B emergency contraceptive but that has to be done within 72 hours of the sexual intercourse to be effective.
Perhaps it is time to look into birth control. good luck