Gut feeling

So I got my blood test results back and it was negative. I’m 73 days late now and all test are coming back negative but don’t you ever get that gut feelings that they’re wrong? Everything in me is telling me I’m pregnant. Am I just psyching myself out? Is there a possibility that I am or what could be some other reasons I’m this late. My periods were never irregular before so why now. The doctor wants me to get on birth control to make it regular but I hate birth control. Any ideas?