You were advised here before that you have to wait 4 weeks after finishing PEP before testing, however your doctor said 1 week after finishing PEP the test is conclusive. You won't find anyone here who will agree with his claim, so all I can say is to test again 4 weeks post PEP for a conclusive result.
Your symptoms don't prove anything because they can't since you can get them from many other causes than just HIV, so there is nothing to do but wait until you can take the proper test. Try to relax for the next few weeks until you can get a test result. Good luck.