Did the pain and vomiting begin the same time your cold started
or which started first? Any diarrhea
or loose stools? Have you found anything that makes the pain better or worse (positioning, empty vs full stomach, etc.)?
Start with your regular doctor, however, you may need to see a gastroenterologist - for which you may or may not require a referral from your regular doctor - depending on the gastro doc and your insurance.
How long ago was your Csection and gallbladder surgeries?