Hello..... When we consumes alcohol, it affects out body in different manners according to dose and time. During beginning, Our sympathetic system becomes active after consuming alcohol that can cause Tachycardia, flushing of face, palpitation, high blood pressure, euphoria and sexual excitement. After heavy doses and consuming above the optimum dose, parasympathetic system becomes active and that causes dizziness, giddiness, imbalance, alteredness, and unconsciousness. So according to your description, that was perfectly normal physiological phenomena. So do not bother regarding that. But my personal advise is Please consume alcohol within a limit and do not consume alcohol daily. Thank You.