I would bypass the doctor at this point & go straight to the ER. Not to sound the alarm or anything, but they would be more equipped to run the needed tests to see what is wrong.....but go. Better safe then sorry. trust me, I have had some experiences w/ER's when my son was a baby, and if I felt that something was wrong - it always was. Moms' know best, better then doctors, if something is wrong w/their kids.