thank you very much it helps alot.
Blood tests are very accurate - you were not pregnant when the blood was drawn.
There are numerous reasons why you might miss or be late for your period that are not related to pregnancy. Also, pregnancy symptoms dont mean a thing as so many conditions can cause the same symptoms. If your periods used to be regular and have started to become irregular it would be a good idea to see an OBGYN (if you havent see one recently).