Hey man,
First of all RELAX.
Ahhhh, thats much better
The feeling(s) you are explaining has to be broken down, only by you.
I remember going out, drinking a lot, the night flying by and waking the next day feeling very negative. Hell, I would go out sober, have a laugh with everybody and still come back home feeling like something was missing, feeling a set of negative feelings.
However, I can tell you want to understand what is going on. I believe its all inside of you. I'm sure any good person can tell you that. What I mean is:
Sit down and write down what you expect on a night out;
Do you want to JUST get laid?
Do you want to JUST have a laugh or two with a group of women?
Do you want to have fun with a group of people and attract the hottest women to you?
Personally, I would prefer option 3!
My point is that you seem to have a lot of expectations and maybe you expect 100% success and your impatience has led you to feel disappointment whereas you should be giving yourself time to learn about who you are, what you enjoy, and then having all that you want (beautiful women and great social group) to eventually become a strong part of your life. You may be on a roll for two days and not for one, but its how you
REACT to what has happened that will enable to sort your issues.
Stop me if I'm going too fast.
But does this make sense to you so far?