Vomited 5-7 times all with a pink/red tinge stomach hurts now but no vomiting should i go to the hospital? no food or liquid before it happened

Please see a doctor: Unexplained vomiting, especially with blood in it is a valid reason to visit a hospital to see a doctor.

ER visit recommended: Given the number of times you vomited with what sounds like blood and abdominal pain, it's is best to get checked out a trusted nearby er to make sure this is not something more serious. Then follow up with your pcp - i hope you feel better soon!