Google "countdown to pregnancy" The very first hit is a site that I found extremely helpful. People create accounts and log all of their symptoms, but the symptoms are only entered into the permanent data base following a positive pregnancy test. You can look at symptoms by the number of days past ovulation, and see a percentage of other woman who also shared those symptoms. It is a great resource for surviving the dreaded two week wait!!! Good Luck!
I would say go to plan parenthood they are free and will test you. But with all the symptoms I would say you are way too early to be having all of those. You do not get most of them tell the 2nd trimester witch is when you are 12 weeks and you are not that far so I would look into a free clink and see what they say or wait 5 more days and test again.
there are free clinics that you should be able to go to, to get blood test done to see if you are pregnant or not. Ck them out where you are and good luck to you!