A month and 5 days late??

Last month I missed my period and I took two dollar tree pregnancy tests and they were both negative so I didn't worry bout it but starting this month I've been having some symptoms like nausea and throwing up and I was suppose to start my period on the seventh of this month, i took a test on Tuesday which would have been the third day after my missed period and it was negative again.. I'm so confused should I take a digital one or just go see the doc? Any suggestions?? 😞