I know how you feel about calling the Dr. I have actually cried on the phone too. Especailly when not feeling well. It is just so overwhelming to be sick then have to call and go thru several people before you get someone who understands and can offer help or advice. Is there someone close to you who can call for you? It may be really helpful to get someone else to do it for you so they can be persistent for you. Actually, now the holiday weekend is over so maybe you've already gotten through?
Blacking out is very serious and really please do not feel it is all in your head or not worth a call to the Dr - they are in this profession and expect situations to arise. If its due to anemia that is very serious. You could black out and fall and hit your head causing more injury. Or if your hemoglobin levels get to low you could have a heart attack. Also it could be due to something else - maybe your meds? Are they new? Or due to something else entirely. I'm not trying to scare you I just hope you get help and start feeling better soon - you deserve it - we all do.