Am I pregnant?!?

The first test I took with my first pee and it came out negative (this one) and then I looked at it again a few minutes later and it was positive so I took a few more and they both were negative and STAYED negative lol. Should I be worried? And should I go to the doctors just to make sure.? Out of all the pregnancy tests that I've taken over the years I never had a false positive came back negative each time. So I'm very confused and need advice.