Its probably from the drinking...did you happen to get crazy or overexert yourself when you were drinking? When you are partying, you tend to be more active: dancing, jumping, etc. And just like too much exercise can make your muscles sore, you can be sore after a night of acting like that. Vomiting does not help, because you use a lot of muscles to vomit. Take some Tylenol and rest...chalk it up to the pains of drinking!
If you were drinking hard liquor that your body isnt used to then it will be short of breathe that alchohol withdrawls and you could have pulled something while drunk. sometimes if you have shoulder pains and stomach pains then go have your appendix xhecked the pain reffers to the shoulder as well as the stomach
HEY WHATS UP THE THINGS U WERE SAYING USED TO HAPPEN TO ME WHEN UR PARTYING DO YOU EVER POP A PAIN PILL WANTS IN AWHILE WHEN DRINKING JUST TO GET A GOOD BUZZ