I have gotten off birth control little over 3 months ago. I am over two weeks late on my period, I have take many pregnancy tests and they are all negative and I don't want to go to the doctor and do a blood test. Could I be pregnant or is my cycle just messed up?

Wait another week or two and try another test... two weeks is the earliest you should be testing... and a month will get you the best accuracy.

That assumes you are taking the test correctly at the correct time. Meaning ONLY right after you wake up and ONLY the first time you pee in the AM... or you wait until the next morning.