Thing is...If your average cycle is 28 days long and you ovulate on the 14th day of each cycle...You would have only ovulated around the 7th of this month (8 days ago). Now fertilization would have to occur within 24 hours of that. Then...Conception usually occurs anywhere from 5 to 8 days later (or longer). So right now...You wouldn't really be far enough along for the symptoms to make sense.
Now...What was your last period like? Maybe you conceived last cycle and you thought that the bleeding you experienced was your period when in fact it was implantation bleeding? If you are fairly convinced that you are preggo already...I would buy a test just to see. If not...Wait to see if your period shows up and test then.
Either way...I hope you get the results you're looking for. :)